I don't know what the F*** that means but anyway...
I think the words say it all, but basically, when there is something you completely don't understand, but don't care to take the time to understand it.
Umm, I have no idea what kind of situation i could give an example of... How's about: A nerd tells ya some stuff about computers that is too freakin' complicated for any non superbrained human to understand. So you say: Idkwtftmba!
Someone who jumps from one relationship immediately into another one.
Serial monogamists can not stand to be alone and often suffer from vast commitment and insecurity issues.
Because they jump into relationships immediately after the previous one has ended, serial monogamists typically don't take the time to reflect on their behavior or why their previous relationships failed; thus, they end up making the same relationship mistakes over and over again.
Person 1: Damn, Dustin already has a new girlfriend?! It's only been two weeks since he broke up with his fiance! I think he's a sociopath.