When you totally make something up, pull something out of thin air. People who think that they know everything often do this so they look smart when they really arent. You can always tell when someone is pulling a butt trick by the look on the person's face, and the smell of bullshit.
"Tom just pulled a ridiculous butt trick. He told me that the sun is made out of butter. What a loser, he's so dumb."
When an argumentation goes to shits and both parties opinions are split in two halves, the "butt rule truce" is an option to defuse the situation. Whoever claims it first gets to spank the other on the bum to lighten the atmosphere.
In a written context, it's shortened as brt, which also can lead to hilarious follow-up.
Wow, we can't seem to agree on if sloths are slow or not in any way, I call butt rule truce. *smack*
Trunkbutt is the slang term for the medical condition known as a prolapsed rectum. This unpleasant, and unsightly condition can be caused by medical problems (specifically bacterial infections) or via the sexual overuse of the rectum through the long-term practice of anal intercourse. In the case of sexually induced trunkbutt, the pulling motions of the penis or other phallic object causes the ring of muscles of the anus to gradually protrude outward. The reality is that this malady looks nothing like an elephant's trunk. It cannot even be considered the closest approximation. But it does take its name from the mighty elephant.
After fifty long years of taking it up the dooker, Big Jim realized he had a nasty case of trunkbutt.
Can you poop standing with your tentacle trunkbutt?