look up any word, like fellated:
1) When someone gives up masterbating for lent, as soon as Easter hits...its like a snow storm of cum.

2) Someone masterbates for so long that there penis starts to chafe so badly that skin flakes fall off. Spring snow is the act of accuratley shedding the skin in your dads mouth after you knock out his memory with roofies.
Hey dad, I think you have dry lips...

No son its just skin flakes from a Spring Snow
by NABB1DP May 10, 2011