Sinis (SIN-is). Ruffian who beset travelers on the road between Troezen and Athens. Sinis asked passing strangers to help him bend two pine trees to the ground. Once he had bent the trees, he tied his helper's wrists - one to each tree. When the strain became too much, the trees snapped upright and scattered portions of anatomy in all directions. The hero Theseus turned the tables on Sinis by tying his wrists to a couple of bent pines, then letting nature and fatigue take their course.