I'm asking this, because my father, 49, was in for a quadruple bypass and they put him on Percocet, he started doing unusual things, such as eating pudding with his reading glasses, as well as walking around the hospital room in the buff. He's been off Percocet for about 36 hours and he's been off Tramadol for about 24 hours. Can these still be causing his problems or is this more serious or what? We're all quite freaked out.