Use weapons, hand guns to be exact.

"Stupit american..so veak...4 of thier men vroken by a simple blow Job" She laughed.

She sat on a box and took a dildo out of her bag. It was a 14 inch black dildo. The sound sounded like a 100 bees. "Finnaly somehting vhat vood enough for my superior German pussy" She said

You sat there as quiet as can be; you quickly and quietly pull two hand guns off the table. You look at them they were still talking and were backing you. Maybe, just maybe you could pull this off. Then you see something out of the corner of your eye. It was a poison dart and a silencer. You grab them and you equip the silencer to a hand gun and loaded the dart.

You got out of the hiding place and walked quietly to the guards. In one hand a gun with loaded with a poison dart and equipped with a silencer and the other a hand gun, not loaded.