Sex postition - Engage in normal missionary until male is close to orgasm. Quickly stand over females chest and take a dump right below her breasts. Then proceed to ejaculate over entire excrement, the end result should resemble the frosty tops of the Rocky Mountain range.
Friend 1 - "Yo, dude, that chick we met last night was nasty."

Friend 2 - "What do you mean?"

Friend 1 - "She wanted something called a Rocky Mountain Snow Cap all over her chest."
by SquatcHammer August 30, 2013
Get the Rocky Mountain Snow Cap mug.