Be 21 about it

To own up to or acknowledge and accept responsibility for actions and/or wrongdoings regardless of the repercussions and opinions of others

" I already know you lying so Be 21 about it."

by URBANEDUCATEDREDNECK March 27, 2016

be 21 about it

To act mature, to act as a 21 year old.

" Stop being immmture, you got to be 21 about it."

by jkk April 23, 2006