Related Clues:

• Fill up with gas
• Stick with a knife
• Penetrate, in a way
• Charge with gas
• Random guess
• Bayonet, e.g.
• Give gas to
• Pump up
• Create effervescence
• Pierce with a knife
• Grab with a toothpick
• Unconfident attempt
• Try, sometimes
• Rough estimate
• ''I'll take a ___ at it''