Brexting is that usual friend that goes to a party, and keeps saying that the party is boring and he's going to leave but stays till the end.
Person 1: Omg this party is so lame, im going home.
Person 2: Okey.
*later that night*
Person 1: Guys this is so boring, now im really going to leave.
Person2: Oh shut up, you're brexting again.