When a man blind folds a woman before sex and explosively releases diarrhea onto her face. He then proceeds to jump out her bedroom window before she takes off the blindfold, leaving her looking like a mud flap.
There is legend of a man who only dates women to mudflap them and never see them again.
(Muh-d-fl-ap)
Noun
A person or persons who willingly and with pleasure catches all products produced from any and all sexual interactions. Including but not limited to any or all STDs.