jo sharty is a name of a person who enjoys walking around with their pants full of shit. it is a subsection of SCAT (a shit fetish.)
Person A: Whats your least favourite kind of person?
Person B: Eh, probably a jo sharty.
El Foresto, translating roughly to "The Forest" is usually used to describe a man or a woman with a large amount of pubic hair.
Person A: Finian is so cute!
Person B: Yeah, but I heard he's El Foresto.
'gelp me' means someone misspelt 'help me'
Person A: gelp me
Person B: you mean help?