Definitions by Dr Jager Dave

Einstiens Mustache 

When you cum on a girls upper lip while she is sleeping and then stick white cat/dog hair in it so she wakes up with a mustache and solves the "theory of relativity"

I thought she was just Italian, then I realized someone gave her an einstiens mustache after the frat party last night

Einstiens Mustache by Dr Jager Dave June 10, 2010