Slo-Mo
Slo-Mo is the poker nickname for Mike McCall.
Origin
"Slo-Mo" is Mike McCall's poker nickname, and is also part of his Big 8 nickname from his time with the drumline of the Florida State University Marching Chiefs. (Yes, the drumline is called Big 8, but that's another story for another time.) Each member of Big 8 was given a unique name, usually something to at least "sort of" exemplify the person. For instance, one of the members, a guy named Trent Robinson, was a "Ken" looking guy (of Ken & Barbie fame) - a good looking guy who always seemed to attract the females. This prompted the old members to assign him the name of "Biff Limelight".
Mike McCall had an easy-going way of doing things, rarely seeming to be in a hurry. As such, he was given the name of "Slo-Mo Slugtrail". He shortened it for poker purposes, but still uses the full name for many of his fantasy sports team names.