Friend: Yo, have you heard about the Tiananmen Square protests?
me: Yeah, it was a bloodba... I mean everyone was cheerful and there was no massacre.
Friend: What do you mean? Wait, who are those people behind you?
Originating from the youtube account Numberphile, Doing a parker square means that you have attempt to do something but didn't quite achieve accomplishing it.
Matt: Hey Brady, I solved this sodoku puzzle !
Brady: You repeat numbers in all the columns and rows.
Matt: It still sort of counts.
Brady: Face it Matt, this is a parker square sudoku.