Part 1: To shave off all your pubic hair and roll it in to a ball, using ejaculate as glue.

Part 2: sneak up on a sleeping or unconscious ( preferably naked ) victim.

Part 3: attempt to roll Said ball in to the open mouth of the target.
Hey man I gave Jenny The Mexican Tumbleweed last night, she almost choked. But it was funny as hell
by Finlonger October 21, 2014
Get the The Mexican Tumbleweed mug.
The act of shaving your genitals then glueing the hair to your partners genitals with your cum.
Yo john lemme give you a Mexican tumbleweed
I gave Lucy a Mexican tumbleweed last night
by Sexy Finnish guy June 22, 2017
Get the mexican tumbleweed mug.