Pronounced jack-stal
Verb: To quit or pull out of something because you are rubbish at it.
Noun: Someone who frequently quits things or has recently quit something because they were doing badly.
'i got an E in Latin in the mock exam. I think I might jackstall it.'
'I'm rubbish at Latin, I think I might quit.'
'You're such a jackstall.'
Celebrity of EGGS academy. Pure legend. Knows magic like a bauss. Dies his hair red. Legit gangster. Comes from the combination of badman sweet Fruitella and J.A.C.E.