The act of plinking, or to plink, is to shoot at objects for fun, like tin cans.
Its different from bullseye, where one shoots small circles on paper targets, and different from the competitive shooting sports such as USPSA which have rules.
The odd little stalk atop of genuine beret. Also a tuft of stray hair that simply refuses to lie flat. Or a stalk on a piece of fruit you have to pull off prior to consumption (say, on an apple or strawberry).
"Zat is not mon beret, zere is no plink!"
"All set for the job interview, except for this darn plink won't stay down!"
"It's all right, grandad, I've mushed-up all your fruit and de-plinked it".