I totally had the couch thing happen too, I was fighting not to be sucked into another dimension, the force was so powerful, and all of the Queen of Heart's card guards were suddenly in the livingroom (who were actually my friends) and they started to chant "Don't pee, don't pee", but the force of the couch vortex was too strong and it forced my to pee. It's very tricky stuff, I can say that I don't want to go there again, but maybe it was just my turn for a 'bad' trip. I still feel really bad for peeing that couch...