I could use a shot of that mouthwash.You could use a little mouthwash after that long trip, I bet.
mouthwash
⇨ mouthwashing; mouthwashnoun a non-conventional method of drinking Cointreau™ (a branded liqueur): swill a measure of the liquor around the mouth, swallow and immediately draw in a large breath. Also used as a verb UK, 2001
mouthwash
slang Hard liquor. The only way to drink the awful beer they serve up here is to chase it with a shot of mouthwash.
mouthwash
n. liquor; a drink of liquor. I could use a shot of that mouthwash.