when you are on IM and you are "chatting" with your significant other and one or more other people at the same time!
I cannot believe that he was cheat chatting on you last night! He actually had the nerve to be talking to you, his girlfriend and some other girl at the same time! What a jackass
by DLux & Tiffypoo May 23, 2007
1 more definition
When you're instant messaging with one person and then you leave the conversation to chat with someone else.
Why is it taking you so long to reply to me? Are you cheat chatting with someone else?
by Crystal Murphy March 22, 2006