Attack the ninjas! Fire is their only weakness! Well, unless they have shuriken... which they probably do. Balls.
Plan B involves finding the person who ignited my clothes and returning the favor ^_^
Plan C generally revolves around failing to do either of the first two plans before the pain centers in my brain wake up, and involves lots of screaming, some running, maybe some fire dousing or possibly just more burning. Then Death. Or Cake. One of those is a lie, the other leads to the party! Assuming party submission position! Wow, it's three in the morning...