when a guy is dancing behind an unknown girl , for example in a crowded disco or pub , and He is trying to put his pelvis as close,of the girl's bottom as, he can, following the rhythm of music while He is faking to dance.
Girl: She was onioning so hard on my ass last night! I thought it was gonna go numb!!
An acknowledgement that we’re living in The Darkest Timeline, where satirical article concepts and titles formerly championed by The Onion are every-day, real-life news stories.
I just saw a Fox News chyron that read “TRUMP: YOU CAN’T IMPEACH SOMEBODY ‘DOING A GREAT JOB’ “ - another poignant reminder that we’re living in the Onioniest Timeline.