eSlap is an online bitch slap. Normally from someone correcting an email you sent out and sending it to everyone in their address book to make you look bad.
Tim: Hey everyone don't go to XYZ restaurant because I heard they are stealing credit card information.
Jim: Dear Everyone,I saw this on SNOPES and this isn't true. Tim,you need to get your facts straight before sending us emails.
Tim: Damn, I feel like I just got eSlapped. I was just trying to do everyone a favor.