It's nice he's trying to motivate her while also pounding away at her.
Y-Yess! I'm shorry! B-But Sensei, your penish, ish too big, I'm at my limit!Kgh, so tight... Hey, loosen up more! I can't get in deep like this!You fool! Deciding limits for yourself is a bad habit of yours! C'mon, halfway there! Hang in!U-Undershtood! I-I'll do my besht!