spooky garbage

our trash can is glowing. it has a flash light in it that is turned on. earlier this afternoon, before z's nap, he was sitting on the potty - pooping. grandma was with him. she asked him to take off his shorts, as it was time to get changed into his pajamas. z got mad, and threw the lit flash light into the pooped-in toilet. grandma fished it out, and it got thrown away here. that was around 1pm today. it is still lit. how long do you think it will last?