If this shell's a rockin', don't come knockin'.
Who even knew turtles could move that fast? Definitely not this curious horse. Probably not even a zoologist who studies reptiles for a living, unless they were doing a study on turtle cock-blocking. This has to be the fastest turtle alive. If the horny little guy is able to strike like a cheetah while he's in the middle of having sex, imagine how fast he could move without a tiny hard-on.
The lesson here is: no matter what the species, not one likes to be interrupted when they're getting busy.