to get up to mischief.
to have a good time:
often involves climbing over fences and jumping into other peoples swimming pools, climbing over the fences at a festival, walking into a house party not entirely knowing anyone but still confidently handing out beers.
slonchers ... your top draw friends you slonch with
an exclamatory yelp of approval or joy, often used when playing a game or laying down a diss.
"Solanches! I nabbed the last dorito in the bag!! I grabbed that eat fo' sho'."
OR
"I solanched that mutha fucka...he tried to bring me down and i was like, 'ima pop a cap in your arse'. I sure showed him, he won't be comin round here no mo."