When you have sex in snow you pull out and scoop some up with your penis on the way back into a woman's vagina
Last night I had sex outside in the snow and gave my girlfriend a chilly willy
The single greatest feeling of pure adrenaline, induced through the snorting of vodka up one's nostrils. May get you intoxicated quicker and with greater effect.
Friend: Bro have you ever done a chilly willy?
You: No, what's that?
Friend: *proceeds to snort vodka and go batshit crazy*