Similar to an ass hole, a “Kass” or kass-hole is typically a narcissist fuck boy with an under developed frontal lobe and a below average wiener. A “Kass” often thinks they are superior to everyone around and is not afraid to speak as a subject matter expert when they know nothing of the topic being discussed. A “Kass” has an uncanny ability to gas light every person they come in contact with and has not yet been able to understand how to “read a room”. Mid-western “Kass” are particularly the worst.
when someone does something stupid or something that inconveniences you they're kass of if they lie then they're kassing. In other contexts, it can mean foul-smelling.
DaQuavious: Sorryguys I can't make it today I had plans I forgot about
Me: nah you smell like kass bruh. you gotta be kassing.