What is the knee thing while making out?

The "knee thing" while making out refers to the act of using one's knee to gently nudge or press against their partner's thigh or groin area during a makeout session. This gesture can add a playful or teasing element to the physical intimacy between two people and can also create a sense of closeness and connection.

While the knee thing can be a subtle and innocent way to show affection, it is important to always respect your partner's boundaries and communicate openly about what feels comfortable and pleasurable for both parties. As with any physical interaction, consent and mutual respect should always be a priority.