gibberishing 

Gibberishing: V. the act of random IMs involving random nonsense, often coming from annoying noobs or crazed fangirls talking to Pete Wentz

e.g
random fangirl:
OMG ALKSFJASL:KF:JDSALKFJDS
FKLSDJFLSDKJFLSDK:JF
LSKJFDSLKJFDS PETE WENTZ!

Pete Wentz: for the love of god would you shut up and stop gibberishing!

gibberishing by sneezy555 July 20, 2008

gibberishilly 

1. to say something in a gibberish sort of way.

Sam said that fairly gibberishilly, I couldn't understand most of what he was saying

gibberishilly by markus122piesuckers December 31, 2008

gibberishit 

Verb: the act of taking something valuable and converting it into absolute garbage.

Oh, this looked like exactly what I needed, but the computer gibberishit.

gibberishit by aescomputer December 28, 2014