no you wouldnt choke and no it probably isnt two objects/creatures. Your nose and mouth are connected toward the back of the mouth next to the little dangling thing (forgot the name)
All i wanna know is how he learned he could do that O.O its not like one day he said "you know what? i'ma put a snake up my nose and see if it comes out my mouth" and bam. or is it....?
Just to let you people know it's not a "giant" booger XDD. It's a snake (at first I thought he was sticking a pipe up his nose an making the snot come out in hismouth :l ).