He decides to buy flowers, so he goes to the flower shop. The flower shop has a long line, so he waits and waits, until he finally buys flowers.
He picks up the girl and they go to the dance. There is a long line into the dance, so they wait and wait.
Finally, they get into the dance, and the guy offers to get the girl a drink. She asks for punch, so he goes to the drink table, and there is no punch line.