A standup is a kind of comedy show where one person tells jokes and funny stories to make people laugh.
Standup comedy is usually fun and entertaining.
Examples:
We went to a standup and laughed a lot.
The standup made everyone in the audience happy.
The standup told jokes about cats and dogs.
The standup's jokes were so funny, I almost fell off my chair laughing.
I've never been to a standup, but I really want to go!
The standup's jokes were so good, I remembered them for days.