"Are you really going to be able to last very long?" she teases. "Look how close you are already! You're dripping pre-cum all over, and you're panting and moaning as your hands get you all excited! You won't last a minute!"
You are embarrassed, but you fear it will be true. Her teasing abuse is making you even more horny, and your hands continue to tease your cock, pulling out the pre-cum.