The act of placing a layer of cling-film over your anus and expelling gas to create the effect of a kazoo.
My German friend plays a mean bum kazoo!
A large animals use of their rear end to push a person out of the way.
Also is a technique used by dogs during play
My pony just bum swiped me when not wanting to get his rug on
It'd be like the guy that offers to come play guitar at your house if you smoke him out. Makes posts every day about sober living and staying strong even though you know he's doing none of that.
I sealed today's date in this envelope two weeks ago and sure enough, Andy called out 'sick'. At least be up front about it and don't fuck other people over with your fuckin bum assery.
When something gives you so much fear that it makes your bum wink, also known as 'the closing effect'.
Holy shit-flaps Alessia! We almost got hit by that lorry! I was so scared, it made my bum wink!
When someone is acting particularly irrational or incompetent at a Certain moment.
Man the fact that he failed that test really put him at bum status.
When someone reaches a level of incompetence that puts them in their own stratosphere of stupidity.
Man the fact that you failed the test really shows that you have reached bum status.