Don't drink and snowmobile.
We're missing some important pieces of information on this video, like why in the hell such a thing could possibly happen. This Russian man seen here basically has his entire body sucked into the back of a snowmobile. He seems fine, if a bit shaken by the incident, although his friends certainly seem to think it's the absolute funniest thing ever. We're going to go out on a limb here and guess that alcohol might have been involved in this incident in some way.
There is also a pretty high likelihood that this incident was also preceded by whatever the Russian is for “watch this”.