Barf-shart 

Situation where one vomits from the mouth and excretes human waste from the anus at the same time. Can be caused from laughing, ridiculous weirdness or excess consumption of alcohol.

He was so smashed that he barf-sharted.

I was laughing so hard that I barf-sharted.

Barf-shart by BAsch July 10, 2010

Double barrel shart barf 

When you tape a willing participant by the neck to the wall in the "wall sit" position so their face is ass height. Then you proceed to also duct tape there mouth completely shut. Next up participant #2 (must be male or the finer points are lost) steps up and sharts in their face.. causing:
Vomit
To stream
From
Both
Nostrils
And thus striking and tickling the guys balls just right while he jerks it.

Baby let's do a double barrel shart barf tonight.

Double barrel shart barf by Hairyballzanga November 26, 2020

Barfshart 

When you are so disgusted by unexpected 'shart' that you unexpectedly barf.

Girl 1: I ate so much last night that I actually sharted myself
Girl 2: That happened to me yesterday but I took it a step further. I was having dinner with my grandparents and I was so disgusted that I actually puked.

Girl 1: OMG thats so disgusting, I'm going to barfshart now too!

Barfshart by M Coopersmith + J Sanders May 12, 2011

barnshart 

when you’re on the Barnstormer at disney world and you shart your pants

One minute i was laughing on the ride, and then out of nowhere, i barnsharted!

barnshart by kaoamshjsksks November 22, 2017

barshart

A table; graph or other graphical representation of statistics deliberately intended to mislead,
coerce or generally manipulate the truth.

Having just watched a presentation in which the project profitability is a gazillion percent; I suspect the barshart may be slightly misleading.

barshart by G Richard M November 8, 2019