When you cut the bottom off of an ice cream cone, stick it on your dick, and then proceed to make sweet intercourse to a woman's bottom.
I brought home an ice cream cone from McDonald's and fed it to my girlfriend's butt hole; it was one delicious dirty frosty.
by IgnorantDigger February 07, 2011
1 more definition
When your doing a chick outside in the winter, and pull it out , put it in the snow, and put it back in.
I did the dirty frosty to her last nite, and she was completly surprized
by tommyl342 January 30, 2008