Peak; Bad luck, gutted. When some shit goes down that is bad on your behalf, peak for you. When something bad happens to a mate , peak for them. Effectively meaning bad luck / gutted to fuck. English street slang.
The highest point in life that ou tard has reached, this occurred in high school for every ou tard. This peak is referring to highest point of success and that must be clarified because anytime an ou tard sees "high," they automatically associate it with weed and if we were talking about that, an ou tard would reach a new peak everyday because the only thing they do is smoke.
That ou tard is on a downhill trajectory in life, that nigga definitelyhit his peak when he was in high school.
"Peak" most often means "outstanding" or “highest” or “strongest” or “level of skill” or "the best." However in stupid children of the 00s slang for some bizarre reason, it can also mean something really bad.