1. A random phrase, typically used to disregard someone when you don't feel like answering.
2. A substitute for a swear word.
3. Used for randomly blurting out in a specifically funny or unexpected situation or time in conversation. A good tool for breaking the ice and/or making yourself look like an idiot.
Bill : " SUPER ZELFROG!" (then walks away)
2. (stubs toe)"SUPER ZELFROG!!!! That hurt!"
3.(Awkward elevator talk)
Joe :So, did you see the game yesterday?
Bill :hey, guess what?
Bill : SUPER ZELFROG!!!