The Fo-Lincoln is just another way to say the .45 caliber. The Fo in Fo-Lincoln comes from west cost / los angeles slang meaning the number 4. The Lincoln in Fo-Lincoln derives from the 16th president, Abraham Lincoln who's portrait is featured on the $5 bill of U.S. currency. Take the Fo(4) and the Lincoln(5) and get Fo-Lincoln aka 45.
Aye , Homie pass the Fo'Lincoln !! These fools are set trippin on us...

You sons a bitches best get off my porch! Don't make me have to pull my Fo'Lincoln!
by QC80SPEARS March 19, 2018
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