Someone who cheats, commits adultery or two-times in a relationship. In short they have affairs with one or more people.
Person 1: "Did you guys hear about Henry?"
Person 2: "Yeah he's totally two-timing Shannon with Mary!"
Person 3: "Jeez Henry is such a love rat!"
by Dear Petunia April 03, 2010
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The Act of respecting, appreciating, or adoring a person short in high. Arose after the term "Rat" was used to describe short persons. Can be used as a compliment aswell as an insult
"That short kid is pissing me off!"
-Show a little rat love!

"I love that short kid!"
-Looks like we got some rat love going on over here!
by LilRat June 16, 2010
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