pimpin' away
Adverb. The actual movement of doing a "pimp away", walking away with a strut after being rebuffed or having your pride injured. Term is often used by a witness, never the person pimpin' away.
"....And now he's pimpin' away." - Kevin Smith, talking about a trash talker who insulted his filmmaking at a SD Comic-Con Q and A session, was told off by Smith, and then gave him double middle fingers backward while walking off.