A boy wants to ask a girl to prom, and he really likes her so he goes all out...
He goes to the florist to buy some flowers, but the line is out the door. He thinks, "that's okay, she's worth it," and waits an hour in the flower line.
Next he goes to the candy store to get some really nice chocolates and again, the line is absurdly long. Again he thinks, "that's okay, I'll wait," and waits an hour in the chocolate line.
He goes to a limo agency to book a limo for prom night, but they are having a sale so many engaged couples have lined up to book a limo. But the line is shorter than the candy store line and the boy thinks, "well, if I waited in that line, I can wait in this one, too." He waits half an hour in the limo line.
After that he goes to buy the tickets to prom. Everyone else is buying tickets too, but he doesn't want them to run out so he has to wait over an hour in the ticket line.
Finally he has everything he needs, so she asks the girl and she says yes.
The night of prom they get in the limo and drive to the venue. The event isn't very well coordinated so traffic is atrocious, and they wait for what seems like forever in a stand-still traffic line.
Finally, they get out of the limo and stand in line to get into the prom. It's a big school, so they wait for the better part of 45 minutes in the entry line.
When they eventually make it inside, the boy and girl start dancing. They're both having a great time, but the girl gets thirsty so the boy offers to get her some punch.
He goes to the drink table and…
There's no punch line.