A black comedy from late 80s/early 90s, possibly a TV movie

A wife and a husband who hate each other hire the same hitman (unknowingly) to kill each other’s spouse. The hitman realizes this and uses it against them to teach them a lesson. The husband looked kinda like Ben Stein. In the beginning of the movie they had a fight over a burnt toast or something breakfast related.
Sorry, that’s all I remember.