Similar to a MILF and a derivative of "Bombshell". A great looking mom that you would want to perform sexual acts with.
"Man, I was at the grocery store today and there was a serious Momshell over in produce."
"Have you ever seen Jimmy's mom? Serious Momshell."
"Have you ever seen Jimmy's mom? Serious Momshell."
by DuckMueller March 24, 2009