"You keep using that word. I do not think it means what you think it means."

— Inigo Montoya, The Princess Bride (1987)

Two people using the same word while meaning completely different things has been a staple of comedy for centuries.

Lewis Carroll built an entire scene around it in 1871:

"When I use a word," Humpty Dumpty tells Alice, "it means just what I choose it to mean - neither more nor less."