goofball
nounUK /ˈɡuːfbɔːl/
US /ˈɡuːfbɔːl/
A goofball is a silly person who likes to joke around.
My little brother is such a goofball that he wore his shoes on his hands.
OTHER MEANINGS
2. A foolish or stupid person.
Don't be a goofball and forget your keys again.
3. A playful or eccentric person who is lovable.
Everyone loves Uncle Ray because he's a big goofball.
4. A pill or drug, especially a sedative.
The old movie showed someone slipping a goofball into a drink.