When a male ejaculates in someone's ass and when that person next shits the first bit will have a white top, hence "snow top"
I heard she got a snow top last night
de QWERTYlulz 30 Iunie 2013
1 more definition
A college with a vast population of whites and minority's are a rare commodity.
de !sh0DGr3at 22 Octombrie 2009