Sam looked at him as his stomach gurgled.
Again.
"You sure you're alright Dean?"
"Mhm, Fine Sam, quit worrying." Dean replied.
"Ok, cos you kinda did eat, what, 3 plates of beans back there?" Sam chuckled.
All of a sudden Dean groaned and let rip the loudest fart Sam had ever heard.
"Dude, crack a window and warn a guy."
"Hey Dean, If I light a match, are you gonna explode?" Sam laughed.
Dean shot him a death stare, but it was just too damn funny to be mad.
"Shut up Sam, I just may be highly combustible right now."