1 definition by SilverHornet

Double booking yourself - especially with regards to social events and boozing - taken from that Gilbert Grape film
Mate A: Where's Fred, he said he'd be here
Mate B: Really, he told me he's staying in with the misses
Mate A: Why is he always doing a Gilbert?
by SilverHornet June 22, 2010
Get the Gilbert mug.