'Mufty' (adjective) is used to describe someone or something, especially when they smell bad or weird.
Aeryc: Bro you wanna go over to Finn's place later?
Salem: Not gon lie to you bruh.. she kinda mufty..
Aeryc:Bro..fr.
'pp' (noun) is a shortened version of the male genitalia 'penis', often time used by people who are too shy to say 'penis'
Finn: OMG, did you guys have sex last night?
Salem: Yeah, his pp was smaller than expected lol
Finn: Y'know you can just say penis right?
Salem: Yeaahah..no..