Irishmen
Two Irishmen are hammering floorboards down in a house.
Paddy picks up a nail, realises it's upside down & throws it away.
He carries on doing this until Murphy asks "Why are you throwing them away?"
"Because they're upside down!" replies Paddy.
"You daft twit," says Murphy
Paddy picks up a nail, realises it's upside down & throws it away.
He carries on doing this until Murphy asks "Why are you throwing them away?"
"Because they're upside down!" replies Paddy.
"You daft twit," says Murphy
Spoiler: