"Hey so really what do you think of my new girlfriend?"
"Dude, she's totally flatacular!"
"Hey! What the hell's that supposed to mean?!"
"Err.. She's totally hot but has tiny ...err ... tits."
"Hey! What the hell!"
a hyrbid of the words "fantastic" and "spectacular," meaning great superiority over something. Invented by the tongue, most likely when she was intoxicated.