Hiding under the hospital bed working the blood rig, it was my first time doing it. It was a pressurized line run up to the sheets that was meant to pool red blood on white sheets. When I went to work the rig the first time, the line popped loose and sprayed fake blood all over me and the floor! In a quiet panic, I called my coordinator under the bed to help me reset it. He kept me calm, and the crew couldn't see the blood spray and had no idea of the chaos under the bed. The rest of the takes worked great. The crew was excited thinking it went off without a hitch, until I emerged from beneath the bed covered in blood, looking straight out of a horror scene! I still laugh about that.