Katrin: How long can you hold your breath?

Katrin uses a stop-watch for examining the breath-hold-ability of her slave. He's on the flor and Katrin places her jeans-ass on his face, streches out her legs for sitting with all her weight, then she takes the stop-watch and mesures the time until he struggles and tries tor throw her off..... "Only so short? you need more training!".... She takes place again on his face, sits even harder/heavier and let him fight for air.... Does he better?.... No!.... More fullweight facecrushing ;-)