Portmanteau of "gchat" and "advertise," when one writes a status message that all other friends on the gchat list read. Commonmethod of disseminating too much information.
She likes to gchatvertise her status. Her status keeps changing on gchat five minutes ago it was, "I can't believe i got picked up for two minutes!" Three minutes ago her status was, "I baked cookies!" Two minutes ago the status was, "I feel fat". Now it is, "Leaky faucet." She really needs to stop gchatvertising her business
A Gchat Slap is when one of the two people in the conversation is acting a fool on Gchat. Thus the one friend who is clearly in the right state of mind will pull out the Gchat Slap b/c he or she can not do it in person. This is obviously intended to bring the person back into reality.
Kristen: "I am thinking of sleeping with the ex."
Paige: "are you sure you can deal with emotions...you know how he makes you feel."
Kristen: "maybe he'll love me again?"
Paige: "GCHATSLAP"
Kristen: "Thanks I needed that."