Possible Clues:

• One must not lag when one's got to double figures
• Hurry so that one's got to double figures
• Get a move on if one's already got to double figures
• Ha! That's the weapon for those in a rush
• Get a move on when one's reached double figures
• Around Saturday, the fowl may get a move on
• Get a move on to get a saint into foul-sounding surroundings
• Hurry until one's got to double figures
• Be quick getting chicken across a road
• In a rush, owns to a number