goose noodle
When one drinks a small amount of alcohol and engages in wobbly activities. (The drunkard must have a BMI of 12 or below, a tall and skinny frame, and a feeble skeleton. ) Then the person grabs someone between their butt cheeks and to squeeze, almost with an intent to hurt, although it is often done in a joking, playful manner between friends. Aka a goose noodle.
My friend Andrew is a goose noodle.