1 definition by BlackBlades

The irritation or annoyance resulting from a relationship with a significantly younger partner.
Adam(26): I shagged that 19 year old chick the other night and now she won't stop texting me and stalking my facebook...
Joe(25): Sounds like you got a nasty case of nappy rash!
by BlackBlades September 4, 2012
Get the Nappy Rash mug.