The word originated from the word Fo' Realious (Foe-Real-ee-us). But when one 12 year old on a halo 2 clan forum misspelled it, the word became Forsarelleus (Foe-sa-rel-ee-us)
It is used to verify something that someone says. Its very similar to saying "seriously"
It is used to verify something that someone says. Its very similar to saying "seriously"
by SantaMayCry July 3, 2005