The online/text equivalent of the tv sitcom laugh track. Used to show an intended joke, sarcasm, or that something is funny when talking via text only (i.e. online "chatting" or text messaging). Can be either in text form, as per "lol", "lmao", etc, or can be in symbol form, i.e. :P, :D,etc
"Hey Ian, you are a fantastic dancer, lol
"are you fucking kidding me? why do you always use that E-L-T (electronic laugh track) b.s.? i get that you joking without it"