Seems nobody wants to admit to anything .... or few have had embarrassing moments (I doubt that).
In 40 years of riding, I've only dumped my bike three times...and each time was when it was standing still !!
First time I was parked at the edge of a grassed area. We were all at a party at a campsite. I decided to move my bike, went running across the grassed area and jumped onto my bike (from the side of the kick stand) as though I was the Lone Ranger mounting Silver or something. Granted, I'd had a few brewskies by this time. Well, my momentum when I hit the saddle caused the bike to fall over the opposite side. There I was, sprawled on the ground with my bike on top of me. That was sure the topic for quite a while.
Second time was no biggie...it just fell over as I was backing up over bunch grass mounds down a bit of a slope. I didn't get caught under it but needed help from a neighbor to lift it up.
Third time (with my 85 VR) I was parked in front of a bike shop. Came out, got on my bike (from the side stand side), plunked my butt down on the seat, heard a *snap* and down I went. Managed to push myself clear as the bike and me fell over. Several "bikers" were milling around and a few got a chuckle at my embarrassment. Had to get help lifting it again. Danged side stand broke. But that wasn't the worst of it. When I got home, I was having trouble getting off the bike and keeping it steady so that it wouldn't fall over... I'm a slender, older guy and that was a bit too much of a task for me (at the time coz I was still rattled from falling off it) so I had to ask this lady and her quite a bit older father to hold the bike steady while I got off and was able to get it onto the centre stand. Unfortunately for me, neither of them spoke english!!! Amazing what sign language can do!
Well, I should count my blessings as at least I've never fallen off while in motion (and hopefully never will). That wouldn't be funny or embarrassing at all.