Nathan Drake

Un-tuck left side of shirt. Find the sassiest lady at the party — engage in smug repartee.

This started as a sexy Cookie Monster costume.

Lara Croft

Buy “sexy” cat/devil/angel/hamburger costume from the dollar store. Remove cat ears/devil horns/angel wings/hamburgeriness.

Agent 47

Draw a barcode on the back of your neck. Introduce yourself to people at the party by sneaking up behind them and giving them a playful fake garrotting.

A Lemming

Wear a green wig. Fall face first off the back deck as many times as necessary for people to start getting it.

“My pants are so full of decorative candles. So full.”

Guybrush Threepwood

Wear a puffy pirate shirt. Stuff as many small objects down your pants as possible. Talk to everyone at least three times.

Gordon Freeman

Wear thick glasses, be really into science and don’t speak. Hmmm, actually if you regularly read this blog this one might be a little too easy.

A Guy From Grand Theft Auto

Just f–king rob the place.

…and what the hell, murder a few people while you’re at it.