So here is a popular catchphrase to mock the reviews of IGN. Probably been deratived from would/would not bang. It also can be referred with "11/10", "it's okay" and "game of the year" cliches.
I dunno how did this became so popular. But i see it on some youtube or 4chan comments out there. It is also pretty popular on MLG montage parodies.
But what is the trigger? Which review did actually cause this gag?
Some related sources:
Funnyjunk 1
Funnyjunk 2
Imgur
Wordpress
Gaiaonline
Reddit