Disclaimer: Tobias's name prediction is totally his own (well, it may be a shortened form of Hallelujah) and not based on any name discussions or gender knowledge of ours (we have none).
In the first conversation, Tobias practices the names of some of his favorite people. In the second conversation, he nearly falls asleep while eating a peach; is he worn out from being goofy with David all morning, or because he got up at 6:00 a.m.? Who knows.