Word Study
het up
WORDNET DICTIONARY
Adjective het up has 2 senses
- het up(s = adj.all) heated, heated up, het - made warm or hot (`het' is a dialectal variant of `heated'); "a heated swimming pool"; "wiped his heated-up face with a large bandana"; "he was all het up and sweaty"
- het up(s = adj.all) Array - worked up emotionally by anger or excitement; "was terribly het up over the killing of the eagle"; "got really het up over the new taxes"; "he was suddenly het up about racing cars"
OXFORD DICTIONARY
het up, adj. colloq. excited, overwrought.
Etymology
het dial. past part. of HEAT
For further exploring for "het up" in Webster Dictionary Online