He was trying to install the air filter upside down and backward.

I laughed when I saw my son trying to change the air filter in the air conditioning unit. I knew my husband had shown him how to change the air filter, but I had a feeling he wasn’t paying attention. He was staring at the air filter like it was going to talk to him and give him directions on how to install it. I had changed the air filter, and it wasn’t that difficult, but my son was making it seem extremely difficult. The air filter simply needed put in the same way he took the old one out. I walked outside to see if there was something I could help him with. He was turning the air filter around and flipping it back and forth. I walked over to him and looked into the AC unit. I whispered in his ear that it would be easier if he were to take the old air filter out before trying to put the new one in. I explained that when he took the old air filter out, he should make sure he placed the new air filter in the same way. I pulled the air filter out and held it so my son could match the new one to it. Once he put the new one in and had the compartment closed, he grinned. For the first time in years, I was the recipient of that grin. He thanked me for helping him out and asked if I was going to tell his dad how he was fumbling? I told him it was our secret. Five minutes later, he came inside and asked how I knew what to do?
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