Replying to Another funny school story

Biology class yesterday. It was some discussion of sugar in the body. The teachers naming things that sugars are in, and one of the things he said was sperm. This one girl raised her hand and says "if sperm has sugar in it, y isn't it sweet" The whole class started laughing, and it took this girl like 10 seconds to get what she said, and her faced turned really red. I'm pretty good friends with the teachers son, so i no the teacher quite well, and he would never say anything offensive or polotically incorrect or anything like that. But his response was fucking priceless. "you taste with the tip of your tongue and not the back of your throat." The girl ran out of the room crying.