When two or more men engage in sexual activity.
Did you see Erik and Dave in the bathroom? They where cupcaking!
by Bucur112 February 20, 2021
When a man ejaculates on a womens sunglasses while she is wearing them. Resembling the frosting on a cupcake.
She got a Sunshine Cupcake when she was at the beach. Totally ruined her new sunglasses.
by Lord_Vigo August 17, 2009