BbRrrRppP!!

i was drinking root beer while studying in the library just now (yes i always STUDY in the library!!).. anyway then i realised something.. we can breathe through both our mouth and nose rite? we also can eat/drink through both our mouth and nose rite? ya disgusting, but possible mah!!
eg while mrA is drinking milk, some1 cracks a lame joke that makes mrA laugh, thus causing the milk to spill out from his nose.. so if stuff can come out from there, stuff can sure go in from there also rite?? another example, when mrA has a flu n he wanna blow his nose, but no tissue anywhere.. his mucus gonna come out soon if he don do anything, so how?.. .. .. .. .. .. .. er.. .. .. get the pic lah hah.. (btw mrA is made up, not pointing fingers ya.. siapa makan chili, dia rasa pedas!!)
so back to my point, if we can use our mouth n nose to breath n eat/drink, can we use them to burp?.. .. .. .. haha just imagine when in a lift, the person next to u suddenly breathe out a sum of air n then u smell char kuey teow!! haha!! nonsence!! ok all biology students, go refer to ur textbooks to c y this is not possible.. .. .. .. ..or is it? *jengjengjeng*