Well, their are always grandkids to corrupt!!
It's very rare I can get anything past our daughter. The boys though (now 28 and 24) still fall for a fair share of what I tell them. Sadly for them, they've put themselves in the position for me to keep messing with them. They call me the human dictionary, human encyclopedia, etc. So, instead of looking things up for themselves they will ask me. Heck our middle son used to work at Home Depot and when a customer had a question he couldn't answer he'd call and ask. I helped a person choose all the tile products for their bath remodel over the phone...lol.
I know what you mean about waiting for the punchline though: My dad was like that. Always telling some big tale only to have it be a joke.It got to the point were we all wore a quizzical and somewhat skeptical expression no matter he was trying to tell us. When I was little (3-4), he worked for the Hoover Company in North Canton, Ohio and he would take us up there for open houses and other events. The plant always had a ton of pigeons living under the overhead structures: My mom said that he told me the birds were called peckers. Then would laugh his butt off when I would yell, "Hey, look at the big pecker over there!", as we would walk toward the plant.
She didn't find him very funny when he did things like that...lol.