may be tmi but i thought it was an important psa and i hope you don't indeed lmao because you might need it for sitting and such.
you shouldn't light a candle while you are *ahem* relieving yourself, no matter how cute the little girl batting her eyes is...you may just drop a flaming shard of match head on your lady parts. really, you shouldn't.
you shouldn't try to draw a stick figure puppy dog no matter how much you think it will help your students understand hypertonic solutions without testing it out on a person who can think like a 15 year old boy...all it will help them remember is that their teacher drew something that looked really, really phallic. you really, really shouldn't.