A delicious cold alcoholic beverage
Can't wait to get to the beach and neck a frosty boi
When the erect penis is submerged in liquid nitrogen, or has liquid nitrogen poured on it in order to experience pleasurable sensations from fast freezing. The cold penis will have the appearance of being covered with frost.
I have a container of liquid nitrogen to give myself a frosty boy tonight
jared jensen when he goes snowboarding
“Jared looked like a frosty boi after snowboarding all day”