Retrocopulation
[医]背位性交
🗣️ 情景例句
You don't know what the surprise is yet?
你们还不知道这个惊喜是什么？
None but the wearer knows where the shoe pinches.
只有那个穿鞋人，才知哪里鞋轧脚。
Haven't you got any small change?
您没有零钱吗？