I can't think of anytime in particular, but I know I've done it at least a few times. Not saying that I'm proud of doing so, but sometimes it was the easier way out. And just to clarify, I'm not talking about big, bad, illegal things, I'm referring smaller things like eating someone else's sandwich from the work fridge, or pretending to be sick just to avoid hanging out with your friends, and to clarify again, those were examples, I have not done any of those before nor do I ever plan to.
I'm not sure if my dream was hinting at anything in particular, but it did feel like it had something to say about the matter of concealment.
The field trip was over and we were back in the classroom while the teacher was explaining the next group project. Suddenly I felt mischievous... *shifty eyes*...The teacher's back was to me, and my classmates were in their own little worlds, so decided to set a nearby book on fire. One thing to note here is I didn't use a match or lighter, I set the book on fire with my mind (oh yeah :D) I knew I was the only one with that ability, but I never told anyone so when the teacher turned and asked who did it I just looked as clueless as everyone else. I could tell the teacher was trying to figure out "whodunnit", but in the end decided to believe it was a "random inexplicable environmental occurrence"....(phew!)