Final answer:
There is not enough information given to determine when Hardin put his lip ring back in.
Step-by-step explanation:
Based on the question, it seems that Hardin had previously taken out his lip ring and now wants to know when he put it back in. The given question doesn't provide any specific details such as the person or context related to 'Hardin', so it is impossible to determine the exact time when Hardin put his lip ring back in.