Doing a Monty

The act of pre-gaming before an event so hard that when you finally make it past the front gate you pass out and have to go straight home.

Characteristics of doing a Monty include; boasting about the amount of alcohol being consumed, appearing powerful until the last second, failing without any notice, consuming a whole bottle of gin and calling yourself sergeant.

"Careful Tom, don't do a Monty on us"

"Q: What happened to Caitlin?"
"A: I don't know. One second she was fine and then she did a Monty"

Wobby: "If I end up doing a Monty today I will never forgive myself"