Warm

John was talking to his fiancée, Rebecca, and he said, "Be honest, now, baby. How am I as a lover?"

To which she replied, "Honey, I would definitely say that you're warm."

"Really?" he said excitedly.

"Yes, in fact I would say that you're the dictionary definition of the word 'warm'."

John was pleased until he went home and, just for fun, checked his dictionary and found, "WARM: Not so hot."