My friend David and I used to make each other laugh when drinking Coke just for the purpose of the nose thing, and it was pretty frickin' painful, but still pretty funny, nice pic by the way, I posted a reply to the horde fighter thing as a response on my page, if you need like, technique advice on how to do it PM me, but I think you'll figure it out.
NintendoDude0
my sis made laugh while drinking soft drink and it came out my mouth and nose!