How to Sign "Watermelon"
The sign for 'watermelon' is a compound of the signs 'water' and 'melon'. First, form a 'W' handshape with your dominant hand and tap the side of your index finger against your chin. Next, hold your non-dominant hand in a fist in front of you, palm facing down. Finally, use the middle finger of your dominant hand to flick the back of your non-dominant fist, as if you are tapping a melon to check if it is ripe.