bowback 

the act of degrading a sexual partner during doggy-style sex; by pushing downwards on the small of the back whilst reaching over the head, inserting index and middle finger into the nostrils and pulling up sharply! if done correctly, a pronounced bow will form in the back.

she's walking oddly today due to the vigorous bowbacking i gave her last night.

bowback by stueyscott July 3, 2005

Bobackian

Ones nature to be Jewish despite a lack of belief in Judaism.

Friend One---"On my birthday, he invited me to a concert and made me pay for my own ticket."

Friend Two---"That was so bobackian of him."

Bobackian by King Rooster October 14, 2011

Back Door Blowback 

The act of passing gastric wind directly from one anal cavity to another which is subsequently re-released by the receiver.

The 'fartee' bends over and parts his arse cheeks with his hands revealing a gaping anus. The 'farter' then positions his anus against that of the fartee and breaks wind directly into the fartee's anal cavity. The fartee then clenches his anus shut thus trapping the wind of the farter. In his own time he then releases the fart as if it were his own. The fartee has become the farter. This is a back door blowback.

Hey Dude, I gave that bird a stonking back door blowback the other night, it fucking reeked!

Back Door Blowback by The Shanners May 4, 2015

Toilet Bowl Blowback 

The uncomfortable surprise of toilet bowl water splashing upward against your genitals because your feces hit the surface like a meteor.

Today I had the worst case of toilet bowl blowback. Like my poop hit the Yucatan and killed dozens of toilet dinos bad. Sploosh.

Toilet Bowl Blowback by Fozter July 9, 2010

fecal blowback 

Microscopic, particulate matter expelled from one's anus during flatuent activity, usually confined to one's underwear if such garments are in fact being worn, though its infinitesemal size can still disperse into the surrounding air regardless of the presence of protective garments thus landing on your peanut butter and jelly sandwich.

Johnny ripped a huge fart when his girlfriend, Carmen, was talking on the phone and she did not realize that his fecal blowback landed in her Cesar salad.

fecal blowback by Professor Rizzle March 19, 2010

Oreo blowback 

When you cum in the anus and they fart the cum and poo back on you looks like a crushed Oreo

Anal sex Oreo blowback

Oreo blowback by ASH9LONDON January 27, 2014

Boback 

Having an exceptionally large penis, thus in fact, just showing it to a young lass will give them pleasure.

man, I heard that guy was packin a huge dong, he might as well be a Boback

Boback by JimCza February 17, 2009