What the hell are they doing?

Meet Ms Shark and Mr Yo (names have been changed to protect the innocent)

Question #1
What are they doing?
a) They're doing a new mating ritual.
b) It's a new kind of foreplay.
c) What the hell are they doing?

Question #2
What is that light thinggy?
a) Someone is pointing a torchlight at their torso.
b) It's the flash from the camera.
c) WHAT THE HELL ARE THEY DOING?

Question #3
Do you still wanna know what they're doing?
a) Yes
b) No
c) I don't wanna know.