You weren’t sure why, nor did you understand how she defeated your usual stamina in just over a minute. She hooks a hoof around your head and pulls you into her massaging lips as if to congratulate you on your performance...or lack thereof. Under normal circumstances you’d be a bit disappointed that you couldn’t satisfy her naturally higher libido the way she’d grown accustomed to, but her smiling, smacking lips manage to convince you that it didn’t matter.