Receiving felatio while defecating. ie. getting a blowjob while taking a dump.
Jeff: "yo that new chick you're dating is SO NASTY! Is there anything she wouldn't do?"
Mike: "Don't know bro. One way to find out. I'll ask if she's down for a BLOMPER!"
Or
I was taking a deuce when my wife walked in to get her makeup. Since it was my birthday she got extra generous and gave me a BLOMPER!
A name given to a person of African/ African American ethnicity who closely resembles a person of another race. The black person is the other's blemper. This originated with a guy named Kemper who met another guy who looked like a black version of himself. He was given the name Blemper; Black Kemper= Blemper.
That blck guys looks just like you, hes your Blemper.
warning - your at a party and a hot chick sits next to you she drops her phone and bends over to pick it up, your buddy across the table gives a light blompers to alert all guys attention to the blomps