I’ll start.
I am one of 9 children and we all loved playing pranks on each other but we never dared play pranks on my Dad because…well, let’s just say we didn’t. But one year we were especially brave and played a prank on him and I remember it to this day. It went like this…
I must have been 12 or 13 at the time. We had gotten our hands on some of the material that people use to put scars and cuts and such on themselves during Halloween time and saved it just for an April 1st prank we planned as siblings. When April 1st came, it was early in the morning and my brothers and I created a masterpiece massive gash on my right arm with fake blood coming out of it and everything. Because they decided I was the best actor, or maybe because they figured I’d be the one to get beat LESS if the prank backfired; regardless, the gash was crafted by my brothers onto my right arm…it must have been 7 inches in lenth and ran pretty much the entire length of my lower arm…it was opened up and blood seeping from it…we were really proud of it.
It was a weekend so our Dad was home. So, my job was to go upstairs and fake a fall and injury. I composed myself and ran full speed up the stairs, ran down the hallway screaming bloody murder. My dad came crashing out of the bathroom and I collapsed onto the hallway, gripping my arm and screaming bloody murder. I’m just pouring the fake crying, screaming when anyone gets near and trying my best to play it off.
He takes one look at it and reacts much differently than I actually expected…but as a father now, I now understand his reaction. He didn’t start panicking and running around, instead, he seemed to snap into a different Dad than I knew and started barking out orders to my brothers (who were on the stairs or in the hallway trying not to break out in laughter…trying to keep it together.) He says to one “Get some towels!” He orders another to get his keys and wallet. He was ready to wrap that arm up and dash off to the Emergency room with me.
So, my brothers aren’t moving as fast as they should be given the serious nature of this emergency and my dad barks at them “Why are you moving so slow! Can’t you see your brothers arm is cut wide open?” Run!!!" My mother by now has figured out it’s a prank because she sees some of my brothers snickering and, I guess she’s better at spotting fake things. She says “Dave, I think the boys are pranking you.” My Dad looked at me…at this point, I had one eye shut and one open and I kind of looked up at him and half crying, half laughing yelled, “April Fools!!!” Then the laughter ensued…all my siblings and my mom broke out in laughter.
My dad…not so much laughter. He was FURIOUS at first. He said, “What kind of prank is this to pull on me? You almost gave me a heart attack!” After a few hours, though, I am happy to report that there were ZERO beatings and he actually told us that we did a really good job on that prank. 
So that’s my best, most memorable, April Fools Prank! Looking forward to hearing yours!
my 20 year old daughter once pranked me with with a phone call just blubbering (crying so hard she couldn’t breathe) saying she was pregnant!! It took me quite a while to figure it out … and even longer for my heart rate to come down.
Six kids… yes, you gotta mix it up. 