crushed nuts
The punchline of an excuse to hit a dude in the nards
Pranker- "Hey buddy, I was about to make you an ice cream sunday, but I forgot, do you like crushed nuts?"

The sucker- "Hell yah, I love crushed nuts"

The pranker- smacks the sucker in the balls

Pranker- "there you go, crushed nuts"

Joke courtesy of HIMYM