Irritating colleague

We had a SM join our team he does little but shoes off a lot. He is handwavy but has good communication.

Also exaggerates a lot like my neighbour next door is rich and has hundreds of cars and bikes.

Then yesterday he was claiming he got an sr architect offer but he joined our company as scrum master

I caught him a couple of times doing silly mistakes as a dev and calling every 5 mins which stopped as I was stern with him