What is Tisfu?
1.
Acronym standing for "That/This Is So Fucked Up!"
Often varied to "tismu", "tirfu", or "tisfmu" meaning "that is so messed up", "that is really fucked up" or "that is so fucking messed up" respectively.
Jimbo: Dude, I found a huge pregnant rat in my Suburban!
Dude: Dude, my name is Dude. Did you ever notice that?
Jimbo: ...no...dude, tisfu!!
See