applecart
an extremely stupid, or foolish person.
Look at Jeff! He is such a friggin Applecart!
Upset The Applecart
This is when plans are made to do something or a way of doing things has been established, but then some know it all assfuck has to chime in with his/her bright idea. The consequences and repercussions of said assfuck throwing a monkey wrench into the clockworks is what ruins everything that has been running smoothly otherwise. This then causes confusion much like if a applecart would spill out and apples would roll all over the place in a crowded market.
Tony : Why is skippy trying to change the trip plans at the last minute, they were set in stone months ago?
Mike : I don't know that mother fucker is just trying to upset the applecart.
Mike : I don't know that mother fucker is just trying to upset the applecart.
Appalachian Applecart
Where you shave a girl's snatch so she'll think you're gonna munch on it… only to find out that she's flipped on her stomach, put in the full nelson and ass fucked like Elisabeth Shue in Leaving Las Vegas.
Damn, she must have rode the Appalachian Applecart last night... she's got razor burn and she can't shit straight.
ass over applecart
When one is hit by something stopping their front side but the rear continues going up and forward causing a roll
When the soldier spray the wild dog with the fire hose it went ass over applecarts