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1.
substitute for any word that agree's with what a person is saying. It is also used as a substitute for anything "yes" such as for sure or yeah. This word was established in 2004 by a man named Gijo Thomas. Coincidently his nickname happens to be frosho.
Question: you going to watch the game tonight?
answer:frosho
by Texas Longhorn(we the best!) February 05, 2010
 
2.
A word used to agree with anything. Also an alternative word for yes, yeah, sure, why-not, indeed etc. Origins of the word are unknown but it is believed to derived from ''for sure'' which became ''fosho'' and finally turned into ''frosho''.
Ehren : ''Should I facepalm trevor?''
Answer : ''Frosho''
by RonBurgundy33 February 02, 2011