To preform a Dank Wank is to hide in a cave and release
carefully timed wads of man matter on unsuspecting pot holers or
spelunkers.
It is not uncommon for a Dank Wank to take upto a week to complete so make sure you have the relevant nourishment to last this time.
This is an advanced move and should not be attempted by amateurs as there is a
high risk of injury to ones self during and post act.