Because 7 10 11
Instead of 'knock knock', they say, 'Arrr you there!'
Doctor, Doctor why are some jokes so painfully funny -It must be the punchline
The Newport (My first joke, sorry if bad 8)
Becaauuuussseee 7 8(ate) 9. You get it huh?
Def Leppard
Because 7 ate 9 out