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a kid who lives in their mom's basement and thinks they're a legend because they know every cheat code in halo 3 and still haven't grown a beard
My cousin is a swill. He still plays halo 3 and thinks he's better than me.
That kid is a swill. He hasn't left his room since 2012.
You're a swill if you still use the cheat code 'infinite ammo' in halo 3.