lamb brains

The act of taking only your ball sack out of your pants, choking the balls tightly to the bottom of the sack tightly with your fist, and then standing nonchalantly next to a friend in an attempt to get him or her to look them unknowingly. When and if they do look, you must bleat loudly, mocking a sheep.
That lousy Ralphy got me to look at his lamb brains the other night… and it was while I was eating too.
by Ted N. Renner May 02, 2006
mugGet the lamb brains mug.

lamb brains

The act of taking only your ball sack out of your pants, choking the balls tightly to the bottom of the sack tightly with your fist, and then standing nonchalantly next to a friend in an attempt to get him or her to look them unknowingly. When and if they do look, you must bleat loudly, mocking a sheep.
That lousy Ralphy got me to look at his lamb brains the other night… and it was while I was eating too.
by Ted N. Renner April 24, 2006
mugGet the lamb brains mug.

Lamb's Brain

When a man flashes his testicles (and only his testicles), pulled up and taught to simulate a lamb's brain. Usually used for offensive humor after the question "want to see a lamb's brain?" or "have you ever seen a lamb's brain?" The person questioned is usually not given time to respond properly before being flashed.
Peter: "Want to see a lamb's brain?"

Brian: "Wha...?"

Peter: (shows)

Brian: "Ewwwww, nasty!"
by TheDoof February 21, 2009
mugGet the Lamb's Brain mug.