When I was in college, one of the rock stations in Kansas City used to play this song every Friday at 5 to kick off the weekend.
What are some other good songs for kicking off a weekend?
Friday by Rebecca Black?
Friday I’m In Love by The Cure
I like this one. Although it’s sorta about Saturday, Friday is when they kick off.
Hint: when you’re retired, every night is Friday night if you want it to be. Neener! 
This song represents the weekend to me, because it used to be the theme song to a Saturday Morning Kid’s Show in New Zealand called What Now?.
You forgot to complete the lyric:
Nothing matters but the weekend,
From a Tuesday point of view …
Something I’ve been known to say on Tuesdays.
I actually got to see the Kings play in a club, back in the late 1980s. They were good, and deserved more exposure than they got. Still, they made the crowd happy, and sure enough, finished their set with an extended version of “This Beat Goes On/Switchin’ to Glide.”
“I Want To See The Bright Lights Tonight” by Richard and Linda Thompson. A wonderful song from a wonderful album.
Oliver Cheatham’s signature tune may be titled “Get Down Saturday Night,” but its lyrical parameters extend as far back as Saturday morning and even Friday.
While observing that “some like to party” and “some like to dance,” he discloses that his own agenda is to “make love until the morning comes.”
'Cause Monday, Tuesday, Wednesday, Thursday are impossible you see
But what you get on Friday is absolutely me.
Caro Emerald, “Absolutely Me”
I can’t believe I didn’t think of that one. I even use it as a password for a website I use a lot at work!
“Saturday Night’s Alright (for Fighting)” - Sir Elton
My sister looks cute in her bracelets and boots a handful of breeze in her hair
There was a San Francisco radio station that used to play The Toyes’ Smoke Two Joints every Friday afternoon. It’s not really explicitly a “weekend” song based on the lyrics, but due to that association I always think of it as such.
Love this one! Always makes me smile.
Nothing particular to the concept of "weekend’’ but, with all due respect to those involved here, nothing else sings more in tune with our topic than women, sex, cars and Brandy and Coke, an early version of Led Zeppelin’s “Trampled Underfoot”. A glorious weekend is sure to follow this opening #…
Days Of Light / Roger Daltrey
Here’s a few..
Give Me Everything Tonight - Pitbull (or any Pitbull song)
Live Your Life - TI feat Rihanna
I Got A Feeling - Black Eyed Peas
Kick Start My Heart - Motley Crue (or any Motley Crue song)