1. An
insult to a person, preferrably a best friend who is
male, when they are below you in any kind of status, but still proceed to talk as if they are above you
2. A shortened version of
cum dumpster
1. My friend is such a cump, since he doesn't want to admit that I'm better than him
2.
Stacy seems
like she is a good
student, but she might be a cump for all we know.