a promiscuous male. a man whore.
"My God, will you stop acting like a prostidude?"
A natural born male that provides as a service to females sex and companionship. A man of the night. Simply a male whore or hooker
Becky was feeling lonely after watching murder she wrote, so she went into town to buy a Prostidude to satisfy her intimate desires
Damn honey, imma get myself one of those prostidudes for the bachelorette party.