Okay, I know I said the 3 ingredients to a good forum is shop talk + sex + gossip + controversy. But so as not to be sexist, one more joke:
Airline pilot starts talking to his wife about whether she would ever remarry if he was to die. He always thought he'd get remarried but surely his widowed wife would never remarry because she would be so grief stricken. So for confirmation purposes he asked: "would you ever remarry if I died suddenly?"
"I don't know, maybe."
He stood there dumbfounded.
"YOU WOULD?"
"I don't know, it's not something I think about! Geeish!"
"Well where would you live?" He demanded, "would you live in our house?"
"I don't know, maybe."
"Would you use our bed?"
"I don't know, maybe." She said.
"Would you let him drive my car?"
"I don't know, it's not something I think about really, but maybe, I don't know."
"Would you let him use my golf clubs?!"
"Oh no, he's left handed."
I can stop. Would you like me to stop?
But that's it. Those are the only 2 jokes I know by heart.