abstainer - Devil's Dictionary definition n. A weak person who yields to the temptation of denying himself a pleasure. A total abstainer is one who abstains from
everything but abstention, and especially from inactivity in the
affairs of others.
Said a man to a crapulent youth: "I thought
You a total abstainer, my son."
"So I am, so I am," said the scapegrace caught --
"But not, sir, a bigoted one."