Rapio Pardus, or To Steal Pants is the beginning of the motto recently adopted1) by Project Pants Pilfer. The full motto is 'Rapio Pardus ut Ususfructus ex Incompertus,“ which translates directly to “Steal Pants to Profit from the Unknown,” and somewhat less directly to:

STEP 1: Steal Pants

STEP 2: ????

STEP 3: PROFIT!

1)
in this case, 'recently' means 'not yet' but JtPN went ahead and put it up anyway