Katrin: how long...

can you hold your breath?

This is the question if you have Kartin sittig on your face.

She sits firm on her slave's face and uses a stop-watch to see how long, until he struggles so much to get free.

It's not easy to get free in this way with Katrin above, because she's strong and heavy enough for holding him down.

So he has to struggle for his life... and earning some punishment scissorhold clamp and stomping kick.