The term "omgwthigo" is an acronym that stands for "
Oh my gosh what the heck is going on?!" normally used when the person either truly is clueless on what is happening (usually wherever the other person is communicationg from) or as an expression while in a confusing online
conversation, mostly with more than two people involved.
The longer version is more explicit, and self explanatory on what it is
"omfgwtfhifgo"