Have you heard about the lemming that jumped off a cliff into an ocean?
I heard it was because of pier pressure.
Lemming's Pier Pressure
Explanation
This is a pun using the words 'pier' and 'peer.' Lemmings are known to jump off cliffs in large groups, which is where the joke gets its basis. The humor is in the unexpected replacement of 'peer' with 'pier'.
Joer'ct Drew
I remember playing the Lemmings when I was younger. I always laughed when I made them walk off a cliff!
Raven
It wasn't because of peer pressure it was from manslaughter inflicted by Disney