Solicited Finger In the Anus. Popularized on the website Fark.com and is a joke resulting from the cliche among TotalFarkers. see UFIA.
Unlike the UFIA apparently an SFIA, while crude, IS also criminal.
Solicited Finger In the Ass. Less common sibling of UFIA, a cliche popular at fark.com .
(from fark...) Colon-cleansing clinic was actually selling SFIA.