Some really bad jokes told to me by my physics teacher last lesson:

What do you get if you cross a car at 70mph going north with a mountineer? Nothing as one is a scaler.

Why did Mr. Ohm and Mrs. ohm get married? They couldnt resist each other.

A man went into a gym to take yoga classes. The instructor asked How flexable are you? the man replied well I am free on Thurdays.

Two Dart players were about to play a game when they decide to use closest to the bull to decide who goes first.
One goes Baa
The other says Moo
The first one replys Right you go then

I do not like adventure walks because they keep rambling on and on and on.

They keep going. Try surviving that for about 2 hours.