Shit Swig 

A person who cannot handle their alcohol (same as lightweight)

Jonathan: "Christopher would you like another drink?"

Christopher: "No mate I think I've had too many spritzers already"

Jonathan: "Shit Swig!"

Shit Swig by Tullygeneric July 5, 2010

Shitswig 

A person who can't drink alcohol and becomes very drunk very quickly.

Lisa Jones is a Shitswig, She Cant handlebar drinks.

Shitswig by Joseph 10 September 29, 2020