Who is this Button for?
Unwelcome people whose company is tolerated only because they pay for the drinks.
Bottoms up! Next round is on you!
Relish the special place society has for people like you who pay for the liquor.
Tip waiters and waitresses generously; they are more in need than your thirsty buddies.
Abstain yourself so you can safely drive your drunk 'friends' home.
Come, gentlemen, I hope we shall drink down all unkindness.
(William Shakespeare, The Merry Wives of Windsor)
No, thou wilt undoe thyselfe. Alas! I behold thee with pitty, not with anger; thou common shot-clog, gull of all companies...
(from the 1605 play Eastward Ho by Ben Jonson, George Chapman and John Marston.)
Something to consider
There is graciousness in receiving as well as giving.
- shotclog or shot-clog: an old, slang word appearing in the 1913 edition of Webster's Dictionary. The person is accepted by his drinking pals because he pays for the shot. Otherwise he would be no more than a clog on them.