One of the students answers the question while Alex is busy getting herself comfortable. Letting out a little burp as she rubs her swollen belly. Meanwhile her massive penis grows erect below it. With the disproportionate amount of praise and attention Alex gets from her teacher that burp is likely to garner more of a reward than her classmate's correct answer. A burp means Alex made room. Surely she must be hungry then. Plenty of classmates about to be ordered into her belly.