often unitentional; when you complain about something and someone else tries to top that, you get into a shouting contest of telling the other person about how much your life sucks
example of a "bragplaing" conversation:
bob: the boss told me to do fileing
joe: well i have to go pick up my kids from soccer practice
bob: oh yah well my mom set me up on a blind date
joe: oh yah well my wife just filed for divorce
bob: i know i had to file it!!!