1. In jest
   "I asked him jokingly whether he thought he could drive the Calcutta-Peshawar express"
   - jestingly 
2. Not seriously
   - facetiously, tongue-in-cheek

See also: joking

Encyclopedia: Jokingly

• pin cherry
• pin clover
• pin curl
• pin down
• pin grass
• pin money
• PIN number
• pin oak
• pin table
• pin tumbler
• pin wrench
• pin-tailed duck
• pin-tailed grouse
• pin-tailed sandgrouse
• pin-up
• pina cloth
• pina colada
• Pinaceae
• pinafore
• pinata
• Pinatubo
• pinball
• pinball game
• pinball machine
• pince-nez