Used as slang to mean that you gave someone chlamydia or to explain that you have chlamydia. It is usually associated with an nsa hookup whereby the person that is 'clapped up' didn't realise the person they slept with had chlamydia.
When you looktrash because something happened to you. Can be physical or something about your appearance.
--Can be used as clapped up or clapped 'subject' up--
"Hey man your hair looks like a pile of giraffe shit!"
"I know man my barber clapped me up!"
--
"Did you hear what Alex said about Izzy?"
"Yeah bro! A black dude overheard and clapped him up! He's in the hospital now..."
Sister: This meeting was to discuss the rough draft of my essay, where we discussed the subsidiary questions I added in my rough draft. We also discussed the relationship between my main title and the real-life situations I chose to use in my essay. We discussed the structure of my essay as well, specifically the Math AOK section and how it relates to the contradiction of the title. This second meeting was particularly helpful in discussing the implications of my essay claims and how to apply the title across various areas of knowledge. There were many sections of the essay that could have been cut down in wordiness and the ways of knowing required further and more in-depth analysis.