Pick a preposition. Several can apply, depending on the setting.. Instead of sounding too trendy, just say, "I'm prepositional."
I'm in. Instead, say, "I'm prepositional ."

I'm down with that. Instead, say, "I'm prepositional with that."
She still thinks I care, but I'm over her.
by CC525 November 10, 2015
John: Where are you at?
Grammarian: NO! You can't end a sentence with a preposition!
John: Fine. Where are you at, asshole?
by Denlah August 5, 2012
Preposition (v): asking for sex using just only words, typically used to describe relationship of a subject and its constituent phrase.
I prepositioned her, asking "atop, or beneath?"
by M. Drewdle May 9, 2014
To, from, on, et cetera.
“A preposition is something you shouldn’t end a sentence with.”
by Victor Van Styn August 7, 2005
A grammar term that you do understand except for it's taboo use at the end of sentences.

It's actually not that taboo.
"Where's my preposition at?"
"I've seen that preposition before."
"What is a preposition atop?"
by T. Barr July 11, 2008
Any preposition that can be viewed as a sexual act; i.e. any preposition in the human language.
JOB INTERVIEW

Boss: "Please refrain from making sexual propositions toward fellow coworkers.'"

Prospective Employee: "What about sexual prepositions?"

Boss: "What??"

Prospective Employee: "Over... Under.... Around... Behind.... And between."
by Afro Burkal8tion March 4, 2010
In the case where the prepositional phrase “in bed” is added to the end of a fortune cookie saying, the entire phrase will always makes sense and could potentially make you more appealing to your date.

In an attempt to captivate and entice Jill, Matt applied the Prepositional-Proposition Theorem to his fortune cookie saying and announced “Your talents will be recognized and you will be rewarded...in bed.” Unfortunately, his date Jill was not impressed.
by jayedee April 1, 2009