yawn burp

Now and again when hungry or tired I form a gaping yawn that allows an escape of air in the process. It happens when my mouth is fully open and most likely not courteously covered by my hand. Hearing the burp I recoil my mouth shut and place a hand over my mouth in embarrassment. I first noticed the instinct while taking the SAT test for the first time one early Saturday morning. The desks were close enough and the room silent enough for the girl in front of me to turn around with a smile.