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1.
The inappropriate fondling of a younger person, male or female. Female ponkers usually become cougars.
Sarah is ponking James in the bathroom again.
by sean75 April 17, 2009
 
2.
ponking is the act of wanking whilst having a shit, in short, mastashitting
v. ponk
n. ponker
am going to the toilet for a ponk, be back in 20 mins
Matt N. loves ponking
by mattynic October 08, 2005