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1.
(chiefly military) acronym for "F*ck you, buddy. I'm just a reservist."
Used primarily during annual two-week activation period required of all military reservists.
Petty Officer - Johnson, you're on garbage detail.
Johnson - (muttered) Fubijar.
by Ivan January 23, 2004
 
2.
Military acronym Fuck You Buddy I'm Just A Reservist
"Why didn't you salute me?"
"F.U.B.I.J.A.R.!"
by Scarfgoat January 19, 2008