Having to put one's mouth over the top of a newly-opened beer bottle/can in order to prevent overflow. Looks quite like a clumsy blowjob, hence the name.
My beerstarted to froth up, so I had to give in and give it a brewjob.
When a person makes a sandwich of 2 sponges around a latex glove, stretching the wrist of the glove back over the sponges creating a crude prosthetic vagina or replica prolapsed rectum.
The same person then squashes the "gammy fanny" between the toilet bowl and toilet seat in order to be able withstand the rampant thrust of a sex craved ginger persons pelvic motions in full rape mode.
I am going to do an absolute Breenjob on my porcelain pan tonight