Today’s FoxTrot comic strip by Bill Amend features a little inside joke for Mac users everywhere; a blatant reference to Mac OS X 10.5 “Leopard”.

Bill Amend is a Mac user, and will slip in the occasional geek reference into the strip. Earlier references include “iFruit” (an iMac parody), OS X’s UNIX underpinnings, the Windows leaked source code incident, and “World of Warquest” (a play off of the game World of Warcraft).

Kudos to Claudia of Mac Rumors Forums for spotting this.