I, you, etc. could use a drink, etc.
(one) could use (something)
One needs something; one would be or feel better if one had something. After the week I've had, I could use a night out. You could use a new suit—that one's looking pretty shabby.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
I, you, etc. could use a ˈdrink, etc.(spoken) I, you, etc. need a drink, etc: We could use some extra help just at the moment.
Farlex Partner Idioms Dictionary © Farlex 2017