depends on if its sarcastic or purposely funny
I'm a sad case, i feel sorry for the person telling the joke,
from 1sec. to never x)
actually, not long at all.. I simply pause until my wife explains it to me patiently and then I get it.. I know.. it is impressive.. thank you..smiles.
Probably longer than it should. Most of the mainstream jokes seem to go right over my head. ;-b
When am sitting at a show its all funny.
I'm good with wordplay. But otherwise I mostly fail to see the humour.