The act of touching, kissing, slapping, grabbing, humping, licking, pinching, grinding on, sucking,
whispering into the ear of, etc a friend in a sexual (& mostly joking) way, but it not being sexual because they are your friend and will
never be anything other or
more than your friend.
You grab
your friends ass in a sexual way while drunk and someone gasps at its inappropriateness or thinks there is
something more going on between you, you say... "It's ok, it's just friendsual"... & all shall be
understood!