Weird quastion????? >.<? howw do i fart.?

LOL okayy so i dunno if this will get deleted,but this jus poped out of my mind...i seen SO MANY mOVIES wher ther are ppl farting...and u kno sometiems my freinds do it tooo.......and like i guess i just see Farts happenin all the tiem but i wanna kno how do u do it?liek, hwo do i fart?? Sry 4s uch a weird quastion i just wanna kno bc it has never hapened 2 me.!!!1 sry