Answer:
Zero
Step-by-step explanation:
There is a ski video. The guy goes up the mountain, so it's "Puff puff positive".
When he skiis down, he says "Nice Negative." Walking on a flat ground, he says, "This is ZERO fun." ANd then going straight down he says, "UNDEFINED!!!!!!!!!!!!"
Hope this helps. . . . here's the link to the vid
