I remember watching this video from my distant aunt's Mac computer in the UK back in 2012, when I was 8 years old. My sister walked in on me at the part where Sonic spindashed towards J.Lo's crotch, and she yelled at me, getting me to click off the video, which I did after struggling with the computer mouse that didn't have visible buttons on it. I was afraid of entering Newgrounds for a while because of that incident.
I'm now an adult, so that memory doesn't phase me anymore. I don't think my aunt knows about it.