A dressing-down or verbal punishment, particularly from management to workers, and used particularly in the Australian mining and construction industries. Meant to evoke the mental picture of having a spikey pineapple shoved up one's arse.
The foreman wasn't happy; he gave us all a pineapple.
A game commonly played amongst stupid teenagers. The game starts off with someone saying the word 'pineapple.' The next person must state a word that either rhymes with, is similar to, or has a similar definition in order to stay in the game. Each player goes back and forth until you can't breathe because you're laughing too hard.
Pineapple... PineTREE!... Pinecone... Apple seed... apple pie... pumpkin pie... jack' o' lantern ... candle... flame... pyro... x-men...Jesus!