haha , if you are referring to the other thread, it's just a "Butter".
a butter is when you lean forwards or backwards on your skis, flexing them, and spinning on the snow at the same time. while you are spinning, the skis are only touching the ground in the direction you are leaning,... ie if you are leaning forward, the noses of your skis are on the ground, your skis are bent so your tails are off the ground. That's a "nose butter", and a "tail butter" is just the opposite.
I don't think he's being serious or maybe he just really is that nooby, but he's posting on NS left and right and I'm assuming it's just because he wants to get his post count up.