He thinks he's such a smartass, always making sarcastic remarks.

He thinks he's so smartass.

Don't be such a smartass and just answer the question.

The smartasses in the class always had a witty comeback.

Some people think they can outsmart me. Maybe, maybe. I've yet to meet one that can outsmart bullet.

He always has a smartassed remark for everything.

He smartassed his way out of trouble.

Stop smartassing around and get to work!

His constant smartassery annoyed everyone in the office.

He always has a smartassy remark.