When your brain completely spaces out on something, usually in an embarrassing way, so you try to make light of the fact that you really screwed up or may in fact be heading toward dementia.
person a) Oops! Memory burp. Sorry I forgot to attend your wedding.
person b) Um yeah, bridesmaids aren't usually such forgetful twats.
by CEDARTEETH August 11, 2010
Get the memory burp mug.