The action (and noise relating to this action) during intercourse when "it" slips out of the vagina, while at the same moment a sudden rush of air fills the void.
We laughed so hard when, while changing positions, my penis slipped out making a very funny "poink" sound.
The act of tapping on a touchscreen device with a straight stiff finger with an unnecessary amount of force out of frustration in operating the stupid device.
What are you doing? Stop poinking my new ipad to death. That will not make it work the way you want it to.
(verb): to hop joyfully and suddenly to life
(noun): the sound made by such action, either real or imagined
When hooly's barrel jumped out of the crusher, typecast exclaimed, "I like how it *poinks* out of there and probably into the hands of an ecstatic, friendly worker."