Blumper 

When a male is sitting on the toilet, taking a dump and a girl is giving a blowjob at the same time.

When trailer trash whores having nothing else better to do than having sex with their nephews

Blumper by Ezekiel November 11, 2003

Blumper 

A blumper is a girl who takes a shit while giving a blowjob at the same time.

She was constipated and killed two birds with one stone by becoming a blumper last night.

Blumper by Bizz Jizz August 3, 2018

Blumper 

A way to say good-bye from chatrooms. May be confused as an invitation to do dirty sex act.

Amy: Bye everyone!
Tom: Blumper Amy!
Amy: Ok, when and where?
Tom: ...

Blumper by vj28.8 January 2, 2011

Blumper 

A blowjob while on a bycicle, usually on a bicycle with two seats.

Me and Jessica Simpson were riding down the street on my bycicle ,and she grabbed my dick and gave me a blumper.

Blumper by bengalmans Unforgiving Nephew October 4, 2009

Blumper 

A statement that's not exactly true but expresses an emotion.

Example: when you say "I will marry this rug, " You won't actually marry the rug, but the statement shows that you love the rug.

Person A: "I will marry this rug"

Person B: "What?"

Person A:"It was just a Blumper:"

Blumper by Jupiter Wu March 10, 2021

Blumper-Decker-Dactyl 

The act of receiving a blumpkin while taking an upper decker as the female is also giving two guys on the sides handjobs (the head and hand movements mimic a pterodactyl flying.)

Dude, I felt like I was in the prehistoric era because of how believable her pterodactyl was when she was giving us a blumper-decker-dactyl!

Blumper-Decker-Dactyl by CPSC October 4, 2010

Blumper Decker

Getting a blowjob while performing an upper decker

Did you here about slut last night giving him a blumper decker?

Blumper Decker by Stevie Thunder April 25, 2009