casper milktoast Share definition Flag A wimp of a man, who won't stand up to his wife. She is so controlling, but thank God, she is married to a Casper Milktoast, who only says , "Yes, Dear. Anything you say, Dear." casper milktoast by Jibbie July 10, 2003 0 0 Get merch Get the casper milktoast mug. Buy Now — $32.95 See more merch