Muzzle Kiss

When kissing the neck of your partner, at one point blow air out of your mouth while pressing the lips down, creating the sound of some sort of... flatulence.! It should be ever so unexpected and quite interesting indeed.

Dive Gear Kiss

While diving in a pool, one person wears a diving mask and the other person has to close their eyes and hold on to the mask-wearing person really close. Then trade the inhaling part of the dive gear.  Take a deep breath and take the inhaler part away. Kiss the person wherever or however you like, then switch places. This should only be done with some one you truly trust would not hurt you.