What if you could walk up walls and across ceilings? 

If I could walk up walls and walk across ceilings then I would use it to my advantage.  I would use it to help people and to get away from people.  I would also use it to scare people.   I would save people like if someone was going to fall from some high place.  I would be the coolest person on earth.  If someone bigger than me was cornering me then I would climb to a high place where they could not reach.  To scare people I would stand on the ceiling in dark and when they turn on the lights, they'll turn, see me, and get scared.