A schtiks is a funny action or way of behaving that someone does to make people laugh.
Schtiks are usually seen as funny and entertaining.
Examples:
The clown's schtiks made everyone laugh.
She has a lot of schtiks to make people happy.
His schtiks are always so silly and fun.
The monkey's schtiks at the zoo were really funny.
The comedian's schtiks were the funniest thing I've ever seen.
The dog's schtiks were so cute and made everyone smile.