fartastic 

When you fart very loudly and get a great sense of relief, as the pressure from the gut is released through a great fart.

Aah, that was fartastic, I can relax again now.

fartastic by Avoura December 28, 2005

Famtastic 

When the whole squad agrees that something is great.

Mike: Did you see that booty?
Peter: That shits famtastic!

Famtastic by Grian5000 May 22, 2016

fartastic 

fart worthy; a situation so fantastic, it deserves a fart.

son: i won first place in hurdles!!
father: gee son, thats fartastic

fartastic by KDIZZO March 13, 2005

Flashtastic 

Originates from the DC Comic cartoon character - The Flash.

It is used to describe things that are superhumanly amazing, and awesome, pretty much THE best thing EVER.

It can also be used as an alternate form of the word "go" when playing games.

Typically it is best used to describe activities that you want kids to get REALLY stoked about.

Alright guys! This game of dodgeball is going to be FLASHTASTIC!

Ok kids, when I say "flashtastic" you are all going to spin around 20 times and then begin!!!

Those tater-tots are flashtastic. totally.

Flashtastic by the JR January 1, 2009

Flantastic 

When something is so amazing, that it rivals the consistency of Flan. In theory.

Lee: Dude, this essay is totally...totally...I can't think of a word!!!!!!!

Kerry: Flantastic.

Lee: Flantastic???

Kerry: Yes.

Lee: What!?!?! That doesn't make sense!

Kerry: It does if you have a 12th level intellect. Do you?

Lee: ...no, I don't know what that is.

Kerry: Then you don't have it, so shut up.

Flantastic by Staff Sergeant Kerry Hicks November 6, 2007

farttastic 

Something that is farttastic smells bad. If it's not a tangible thing, but you think it would smell bad if it was real, that would also be farttastic.

In Spanish, the word is farttastico.

rachel: imogen and spek should come back.
israel: yeah, them being gone is totally farttastic.

child: mom, what are you cooking?

mother: my family's secret recipe, doesn't it smell great?
child: no, it's totally farttastic!

farttastic by israel!! October 13, 2009

Flanntastic 

When a guy looks ridiculously hot while wearing flannel of any kind.

"Oh my god becky, Did you see Kurt today? He's looking FLANNTASTIC as usual. I can barely contain myself."

Flanntastic by MissMelissaJean October 7, 2009