LISTEN TO THE WORD OF GOD
I witnessed something similar to this on an airplane once. I kept hearing outbursts of laughter. The flight was turbulent and bumpy, hardly a reason for humour. But some fellow behind me was cracking up. No one else, just him.
Finally I turned to see what was so funny. He was wearing headphones and apparently listening to a comedian. Because he could hear what I couldn’t, he acted differently than I did. (Lucado, Max. Just Like Jesus. Nashville: Word Publishing. 1998).