a group of three people (usually male) who walk into a social event and all eyes are on them. they seem to attract everyone with their level of swagger. and all of their swagger combined results in the phenomenon known as the "swagtastic trio"
female 1- did you see Josh, Ryan, and Zach last night?
A word mixing of "slob" and "fantastic". It is anything that requires no work of any kind and that in itself is fantastic. This word may be used as an adverb or adjective.
J: Yo, you wanna come over slob?
M: That would be slobtastic
T: I'm all about having a slobtastic summer.
MK: Yeah, bro, skimmin, sleeping, slobbin...that sounds like a slobtastic awesome kind of summer to me.