1 definition by DJ Japeye
To perform a sexual act on another individual on public or group transport (such as a bus, train or plane). Sometimes but not always by a girl named Melissa.
"I fully saw this girl give this guy a Melsy on the train the other day"
or
"We were all so drunk on the way back from the wedding that Mel gave James a full 'Melsy' in front of everyone"
or
"We were all so drunk on the way back from the wedding that Mel gave James a full 'Melsy' in front of everyone"
by DJ Japeye January 28, 2019