When I was younger I memorized this in three (3) steps to use at zero (0) family gatherings... is it cheating if my stupidest joke is the only one I can recall instantly? :]
Warning: this joke is so ancient, it's sepia-toned.
An engineer and a doctor were arguing about who had the harder job. To prove his might, the engineer decided to open a clinic, betting he'd be a successful doctor:
"If we can cure you, you pay $500; if we can't, we pay you $1,000."
Of course the doctor saw the proverbial <easy money> button immediately. The guy didn't even have a license! So the doc went straight to the clinic as his first patient.
Doc: "Sir, I have lost my sense of taste."
Engineer: "Nurse, please bring the medicine from box 22 and put 3 drops in the patient's mouth."
Doc: "Blawrgh! This is gasoline!"
Engineer: "Congratulations! You've got your taste back. That will be $500."
The doctor leaves, fuming. But not to be beaten, he goes back after a few days -- he can still leave with a profit if he plays this right.
Doc: "Sir, I have lost my memory."
Engineer: "Nurse, please bring the medicine from box 22 and put 3 drops in the patient's mouth."
Doc: "What, no! That's gasoline!"
Engineer: "Congratulations! You've got your memory back. That will be $500."
The doctor leaves pissed. Buuut, doc comes back after a few days --- he needs to at least break even,
right? So, more determined than before, he brings a cane and says:
Doc: "Sir, I've gone blind."
Engineer: disappointed "Well, unfortunately I don't have any medicine for that. Take this $1,000."
Doc: "But this is $500..."
Engineer: "Congratulations! You've got your vision back! That will be $500."
Okay, I was a child of 12 or so at my local gym with a friend. We were talking and some old guy we didn't know came up and asked us this. We stared at him, dumbfounded for a few moments before he said, "it has no legs."
He walked away and I never saw him again.
He's wrong. The original riddle is making fun of riddles, and so has no answer. Someone, might have been the same guy, walked up to me in a grocery store, as I was looking at mangoes. And he said, "If you eat a mango every day for 75 years, you'll live a long life." And he walked away.
My dumbest joke is actually a family joke that has built up over the years. Unfortunately it works only in German.
Basically when I was very young I mispronounced a key word in a Christmas carol and hilarity ensued that dogged me to my father's dying day. It developed over the years into this:
Es ist ein Ross entsprungen
Aus einem Stall so alt,
Wie uns die Bauern sungen,
Das Ross entfloh mit G'walt.
Es ist ein kluges Pferdchen
Aus altem Stamm gezeugt,
Das mitten in der Nacht dann
Sich aus dem Staub gezeugt.
Das Ross, das ich nun meine,
War flink und voller Mut,
Es sprang mit einem Male
Hinaus in die kalte Flut.
Mit Hufen, stark und kräftig,
Fand es den Weg hinaus,
Entkam dem Stall ganz leise,
Und rannte schnell nach Haus.
(I apologize to any German speakers for the terrible lyric verse.)
Stalactites hang tight to the ceiling, stalagmites build up from the ground with all their might, but when they meet in the middle? You grab your phone and ya call 'em!