A jackhob is somebody who gives and takes of semen orally. It is a concatenation and contraction of 'jack' for masturbate and 'hobnob' for the sharing of drinks together.
me:"bless up nigwet, can u hack me a jackobeetay im thirsty?"
18 year old:"yeah bless the moneyz and you have it sonny boy"
me:"sound as a pea, JACKOBEETAYY!"
(you get the jackobite)
me:"mmm jackobiteyyyyy"
"She was blowin' me and threw in that handwork, bruh. She gave me a nice jackjob."
"Aw word? She was jacking you off while she was sucking your thang?"
"Helllllll yeah!"