When I was a boy, our pastor never told jokes or tried to be funny. That's the reason I found his 2 bloopers so shocking--and hilarious.
One Sunday, he was preaching on John the Baptist in a sermon that was forgettable until he uttered the remark, "Then Jordan baptized Jesus in the John." I sat there absolutely stunned. What made his gaff even more hilarious was the stone-faced silence of the whole congregation. No one smiled, looked around, or even noticed the gaff. "Weren't they listening?" I asked myself. I tried to control my giggling.
Then about a year later, our pastor was preaching on David's tense relationship with King Saul. At one point he said dramatically, "Then David fled to the gates of the sanctuary. And there he stood, breathless and pantless!" Again, everyone just sat there, stone-faced. But after about 5 minutes a guy near the front looked back in my direction with a wicked grin on his face and I thought, "Well, at least that guy was listening carefully." Then I giggled. When I became a pastor decades later, I recalled those 2 bloopers and asked myself, "Is anyone listening carefully to my sermons? Sigh!"