Made me laugh. Happens in our house with our girl. When Lola finally gets to her breaking point with Floyd always ending up doing that at the end of their play time. She snaps and pins him and does it right back.
We've had our share of fights too...but for the most time they're best buddies. I would of never thought that my older boy Usko could get that vicious like he did at one point towards Voitto, but it was really all our fault. We have corrected our ways and now there's peace and harmony, most of the time.
That's exactly how the play fighting ends up in my house too. Hershey is neutered but still makes the motions...but when Chum ends up on top I have to beware there's no happy ending!