One who butts in to other peoples conversations, or tasks. Partaking in another persons task, or life goal. Stealing.
Jessica was completing the closing tasks at work when her co-worker came over and started completing the tasks for her. Jessica turned to him and said:
"Hey! Quit being an IN BUTT-ER!"
"Hey! Quit being an IN BUTT-ER!"
by Quiz Ones April 25, 2009

When you hire a prostitute to stick a frozen stick of butter up their as in order to warm it, making it spreadable and or liquified.
Hey guys, I'm hiring a couple Butt-er Warmers for our lobster dinner tonight. When will you be here?
by DERDZ December 31, 2020

by buttercupHELP November 24, 2021

by peenuts March 07, 2023
