Our sense of humor is funny. Pun intended. About 10 yrs ago, travelling with work, I purchased an $80 bike at the big box store. Way cheaper then a rental bike. Their mechanic and I checked it out and I was good to go.
In front of the store I mounted from a dead stop as always planning on balancing with the handlebars until rolling. We forgot to tighten the handlebars. Rolled right off the bike.
I'm laying on the ground laughing my tail off and notice a family sitting on the bench in front of the store. They all had deadpan expressions. Not even a hint of a smile. Managed to stop laughing, gave them my best smile as I took the bike back in the store to borrow a wrench. I still laugh at that incident.