The funniest song to me is Frank Zappa’s Dinah-Moe Hum. Practically every line is a laugh riot.
But I gotta give an honorable mention to Hendrix for his famous line that, while not funny itself, was so universally misinterpreted that eventually, even he made fun of it. I’m speaking, of course, about:
'Scuse me, while I kiss the sky!
(Heard as: 'Scuse me while I kiss this guy!) 
Rats. Someone took my nomination of Alice Cooper’s “School’s Out” already.
OK, then, I nominate the one line in Guns N Roses’ “Pretty Tied Up” where Axel says in a deep voice, right before the refrain (and for no apparent reason), “Cool Ranch Dressing.”
UnEasy Rider by Charlie Daniels
(a very funny song but my favorite line is)
I aint even got a garage! You can call home and ask my wife!
and then there is another song I don’t know the title or who sang it. It is from the early-mid 70’sand the song is about some Feds busting some guys pot farm and the last line of the song is
We just smiled and waved, sitting on that sack of seeds
“I’m off to see the Bootleg Beatles as the Bootleg Mark Chapman”
Half Man Half Biscuit, “When The Evening Sun Goes Down”
“We just smiled and waved, sitting on that sack of seeds”
Wasn’t that Jim Stafford? “Wildwood Weed” I think was the title.
Oh yeah, and another good one by Tom Waits. “The Piano Has Been Drinking” is another one where every line is hoot, but I particularly like this one:
“And you cannot find your waitress
With a Geiger counter
And she hates you, and your friends and you
Just can’t get served without her.”
I was going to ask if Weird AL was fair game for this post or not, but then I saw that he has already been listed.
Weird AL has his fair share of weird songs, and amazingly the titles clue you into his weirder songs. “Everything you know is wrong” (a reference to disembodied head of colnel sanders, black being white, short being long…etc )“Sourkraut” (11 minutes of near in coherenent babling,taking you to albuqurqe, a plane crash, the future life of a 26 year old being forcefed sourkraut with an inept donut dealer… ) have to be among his most insane… of the insane.
Then again, They Might be Giants also seem to have a fair share of crazy songs. “Your older than youve ever been before, and now your even older…” “He wants a Shoehorn, the kind with teeth…”
More Mainstream, I would have to give a nod to songs that have a in-joke that the listener gets after a second or third hearing.
I havent heard the song for a while, I think it is either a Hootie and the Blowfish or Smashmouth song. The song’s lyric is something like “Head and toes are hard, but the middle is soft”
The Cramps… New Kind of Kick
“Life is short
filled with stuff
don’t know what for
I ain’t had enough”
We don’t care whose ass we kick, and when we’re all alone
We stare into the mirror and try to kick our own-- Fry and Laurie
Heh, that’s been one of my favorite songs since I was a child…that’s on the same album as ‘Spiders and Snakes’, right?
Funniest Beatles lyric:
“Now they know how many holes it takes to fill the Albert Hall.”
Hall of Fame: Lyle Lovett
“I told her redneckness has got to be a disease
You catch it on your fingers, it just goes right up your sleeve”
"The preacher asked her
an’ she said ‘I do’
The preacher asked me,
she said ‘yes, he does too’ "
"Mystery Masked Man was smart
Got himself a Tonto
'cuz Tonto did the dirty work for free
Now Tonto, he was smarter
One day said ‘Kemo Sabe,
Kiss my ass I bought a boat and I’m going out to sea.’ "
You are right, every line is a great one liner. Kinda like Casablanca.
Now, tell me who does it and end my misery.
:::smooches:::
From Jessica Simpson’s “I Wanna Love you Forever”…
“Pour yourself all over me
And I’ll cherish every drop here on my knees”
I’m pretty sure this is unintentional (at least, I hope so) but is this really the message you want YOUR twelve year old daughter getting…?
Twelve year old boys worldwide scream “Yes!!!”
From Pearl Jam’s “Dirty Frank,” a somewhat obscure song about a cannibalistic bus driver.
“The band all knows, we’re too afraid to mention
Don’t want to be part of frank’s luncheon
A-lose weight, a-be safe…
Where’s Mike McCready?
My god, he’s been ate!”
and
“Why that Dirty Frank was a bad mother…Shut your mouth!
Hey, I’m just talking about Dirty Frank”
“My moral standing is lying down.”
Ben Folds, Rockin’ The Suburbs:
“It makes me real pissed off, it makes me wanna say
It makes me real pissed off, it makes me wanna say
It makes me real pissed off, it makes me wanna say
FUUUUUUUUUUUUUUUUUCK!”
My favorite line from Joe Walsh’s “Life’s Been Good”:
“My Maserati does 185-
I lost my liscence, now I don’t drive”.
From the Violent Fems “Punk Rock Girl”
“We went to a record store, and asked for Mojo Nixon
They said ‘He don’t work here’…”
Sting’s “All This Time” is full of a whole plethora of great one line lyrics. People remember it for the bouncy bouncy tune of the song, but the lyrics Sting is actually saying are silly/profound.
My favorite is:
“Men go crazy in congregations, but usually get better one by one.”
Warren Zevon, Mr. Bad Example:
“I ordered up their furniture and took it to Spokane,
And auctioned off every last Naugahyde divan.”
More of They Might Be Giants, this time from Ana Ng:
"I saw this painted on a bridge – ‘I don’t want the whole world, I just want your half.’ "
James, Laid:
“Messed around with gender roles,
Dye my eyes and call me pretty.”
Sir Mixalot, I Like Big Butts:
“But Fonda ain’t got a motor in the back of her Honda,
My anaconda don’t want none unless you got buns, hon.”
Southern Culture on the Skids, Camel Walk:
“Baby, would you eat that there snack cracker in your special outfit for me, please?”
King Missile, Detachable Penis. No quote, as the entire song is funny.