When you look at your hand in the thumbs up gesture side on, if you look closely at the four curled fingers that go into the palm and notice the edge of the knuckles it looks very much like the classic early
Hand Grenade known as the pineapple
hand grenade. Now looking back at your hand in the thumbs up gesture if you curl over your thumb and imagine its inside the ring that’s joined onto
the pin, then move your
thumb up as if to remove the pin thumbs up BOOM. A hand gesture thrown by the hand grenade Friendship goes with a bang!