It’s a prank call, and besides he told it wrong. See, what you do is, you call the drugstore, you ask, “Pardon me, do you have Prince Albert in a can?” When the clerk says “Yes,” you say,“Great, I’ll be right down there to buy some!” And then you DON’T GO! 
What is the world’s thinnest strip of beach?
Bobby Sands.
Not many people get that one these days.
Anyone remember the moron jokes? They’re subtly different from the Polack jokes. A bit more innocent, read like they were aimed at an audience of children (how times have changed!), and likelier to be based on puns. Like, “Why did the moron cut the noses off his fish? So they wouldn’t smell!” Or, “Why did the moron throw the alarm clock out the window? Because he wanted to see time fly!”
I must have heard that one the same year as:
Where did Prince Charles spend his honeymoon?
In-Diana.
(in 9th grade in Ohio, 'twas teh funny…)
What does a man do standing up, a woman sitting down, and a dog on three legs?
Shake hands.
A couple was arguing.
“I’m breaking up with you”, she said.
He said, “Why?”
She said, “Because you’re a pedophile!”
He said, “Well, what do you know? You’re only 8 years old!”
…and now for one of the worst jokes ever…
[spoiler]Two necrophiliacs were talking. One asked the other whether he was still seeing the 80-year-old that he had been with the last time they talked. He said…
wait for it…
“No, the rotten bitch split on me!”[/spoiler]
What did Princes Grace have that Natalie Wood wished she had had?
A Stroke
What Wood doesn’t float?
Not so much a joke as a cutesy one-liner that probably appeared on Full House.
Little kid: If I won the lottery I’d go to McDonalds and buy a billion hamburgers so I could watch them change the numbers.
In the same vein…
What was David Koresh wearing when they found his body?
Charcoal pants, charcoal jacket…
In a Simpsons episode, Homer is turned on to Reading Digest magazine by a cartoon titled “Motoring Ms. Haps” depicting a car that has been crushed after being driving into a lamppost. The woman says to her husband, “Well, honey, you always said you wanted a compact!”
A guy I knew had a box that said “David Koresh action figure!”. You opened it and it was full of ashes.
How do you pick up Branch Davidian chicks?
With a dustbuster.
Why did Idi Amin kill 900 people?
He wanted to keep up with the Joneses.
Why did Begin invade Lebanon?
He wanted to impress Jodie Foster.
Must have been funny in the original ancient Egyptian:
This was told in Sneferu’s time:
“How do you entertain a bored Pharaoh?”
"Well, you sail a boatload of young women dressed only in fishnets down the Nile, and urge the Pharaoh to catch fish!”
Hard to beat 4000 years of obsolesce!
A prominent Republican political strategist told me this one circa 1991:
Q: What’s the difference between the elite Iraqi Republican Guard and Ted Kennedy?
A: Ted Kennedy actually killed someone.
Democrats, substitute Laura Bush. 
From a ca.1980 National Lampoon comic strip:
A honeymoon couple boards a train, and begins noisily arguing about two things: how they will have sex, and where their child will go to college.
The wife insists, “I will get on top. And the child will go to Harvard!”
The husband counters, “I will get on top. And the child will go to Yale!”
(Back and forth ad nauseum).
Finally, an annoyed passenger suggests, “Why don’t you roll her over, stick it in her ass, and send the result to Princeton?!”
What is white and flies across the ocean?
Lord Mountbatten’s tennis shoes.
What meal glows in the dark?
Chicken Kiev.
Prediction: Menachem Begin will die on a Palestinian holiday.
Any day Begin dies will be a Palestinian holiday!
only fairly recently obsolete:
What’s got three legs and lives on a farm?
Paul McCartney and his wife.