If you back up the toilet at work or someone’s house with no plunger available, look for liquid hand soap. Dump some in the toilet and wait about five minutes and flush again. The soap lubricates the nasties so they’ll flush away. If it’s still clogged, find a way to dump hot water in the toilet, as it can have the same effect. Use the trash can or something. If it’s still clogged, kick the door open and run like hell. Find a new job or new friends. You just left their toilet full of hot soapy shit soup. Who does something like that, you fucking psycho.