Jeff crawled around inside her pussy for a while, exploring the tunnel and everything in it. There wasn't much to check out, as her cervix seemed pretty solidly shut and he wasn't ready to crawl out through her labia just yet. Still, it was fun to check everything out while reminding himself just how tiny he had become and where he was.
Eventually, though, he must have passed out, as he found himself waking up when the giantess around him started moving. He knew his mom got up early for work, but he had expected to be out by then. Not wanting to crawl out and be discovered, he knew he had to just sit and wait as she went about her day. So he entertained himself by trying to figure out what she was doing based on her motions. He was able to tell as she got dressed--presumably a skirt like normal, which would give him more room to crawl out if he wanted to try to--and then later as she got in the car and drove to school.
His boredom was a bit eased as the school day began. His mom taught English, a subject that bored the hell out of Jeff, but it was better than nothing, so he listened in as she asked various students to give their impressions on the significance of various things in the Great Gatsby.
After two or three periods of this, he decided he had had enough. Being inside a vagina was amazing, but it couldn't last forever. He had to try something else.