1)n. One who enjoys sexual congress with baked goods, confections, pastries, etc.
Come 'ere cupcake, this jackfroster's got some banana-nut creme filling for ya!

Eww! Like that jackfroster from American Pie.
by Alienthropologist October 23, 2004
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n. When a girl sticks a ice cube up your ass while giving you a blow job.
by dec0de October 27, 2003
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When a person goes on a space walk, they proceed to cut a hole in their space suit where their cock is and wilingly let the vacuum of space drain their balls
"Dam if I was an astronaut I would have my balls completely destroyed from doing the JackFrost so much"

"Holy shit did you hear that Chris got a JackFrost in space!"
by Longsholngbongtongnigga69 February 29, 2020
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