A smegma looking substance found on microphones after a performer spits all over it.
This microphone is all kasty.
When someones is so fat to the point they literally explode
Man you're so fat you might become a kasti
noun
origin: Lithuanian
a famous Lithuanian folklore character known for extreme knowledge and strong opinions. Does not suffer fools gladly nor does yield against authority easily.
Loved by his friends, respected by his peers, feared by his enemies.
Has lesser known younger brother Vaidotas.