A nose that bleeds severely during intercourse, usually causing the women/man to retract and flee.
Joe: OMFG! did you know that matthew west is a munt-nose?
Elliot : No way! That must be why he bled last night!
A nose that,when the person owning it is stimulated sexually, bleeds non stop, causing embarrasment on the highest level.
Several famous Munt-Nosed people include
"Im really sorry, it doesnt usually do that, I must be a munt-nose, like my father before me!"
" Just shut up and help me get the blood of my bra would you?!"