A slang word meaning cool.
Michelle and JT are yumpy
Another word for crazy, loony, loopy, nutty. Somebody who has lost it upstairs.
That old man is yumpy!
An adjective describing something (usually an animal or person) that is simultaneously cute and ugly. Yumpiness is often accompanied by the sensation of something being so ugly it's cute.
Wow, Eleanor Abernathy (better known as the crazy cat lady of "The Simpsons"), your new persian cat is so yumpy! I love it.
a mix between a tasty girl/boy and your drink
guy 1: did you get with that chick last night?
guy 2: nah we just kissed, but she sure was yumpy.