My dad dropped a joke at the DMV in Boise that made the clerk snort
We were there 45 minutes and she looked miserable, so he leaned in and said "I only came here to get my license renewed, but I guess you could say I'm really just trying to stay legal." She laughed so hard she had to redo his photo, so what's the one dad joke that actually landed for you?
That joke is solid because it works on two levels and the clerk probably hears "just here for my license" fifty times a day. Dad jokes live and die on timing, and your dad clearly knew she needed a break more than he needed a laugh. Best one I ever heard was a guy telling the pharmacy tech he was there to pick up his "refill of patience.