2 definitions by Niamh Clarke and Teresa Walsh

Largasm

When you laugh so much you sound like your having an orgasm

Teresa: "Whats that noise"
Niamh: "I think its that girl"
Teresa: "Is she having a largasm"
Niamh: "Im pretty sure, shes been laughing for a while"

The action of screaming while messing up your hair, with both hands, during a night out to get the required volumised indie style.

Teresa: "Look at that Chav, her hair is so flat"

Niamh: "She definitely needs a hairgasm"