Dealing with repetitive and seemingly playful responses like "your face" can be frustrating. To respond effectively, you can use light-hearted humor to disarm the situation. Here are a few comebacks that you could try:
"Ah, the classic 'your face' comeback. Timeless, but I think we can do better!"
"Oh, you got me there! But let's get back to that weird-looking cloud."
"Haha, good one! I guess we both have our unique features to embrace."
"Your face is just too easy of a target. Let's try to come up with something more creative!"
"Well played! Now, can we focus on the topic at hand?"
"I see you've got 'your face' on repeat mode today. Care to mix it up a little?"
"You know, 'your face' seems to pop up everywhere. It must be a really versatile phrase!"
Remember, the key is to keep it light and friendly, so it doesn't escalate into a serious argument. If the person continues to use the same comeback, try to address it calmly and let them know you'd appreciate more varied responses in your conversations.