When you finally came , the sheer amount of semen exploding in her mouth and flowing down her throat was certainly more than both of you anticipated. Yello felt for a short moment how her gag reflex acting up, but then decided to quickly gulp down your cum to avoid an embarrassing situation or spitting it out in front of you (A big no-no for her, "always swallow, no matter what" was her motto.)
Even as some of it shot out her cute simian nostrils, she firmly held on to your cock and swallowed it all with a stern, determined look on her blushed face. She felt a certain amount of cheery pride that she could make you produce such a rewarding result, while your still twitching dick kept pumping the last drops down her gullet.