In a more general sense, don't look for trouble with your 'friends'. Yes you can make a few silly or mischievous comments, but if you notice it is spiralling downwards, stop immediately. It was probably a misunderstanding both ways and the consequences could be, well, not worth it - and you could have your account suspended.
Using a Weak Password
Leaving Your Full Birth Date in Your Profile
Overlooking Useful Privacy Controls
Posting Your Child's Name in a Caption
Mentioning That You'll Be Away From Home
Letting Search Engines Find You
Permitting Youngsters to Use Facebook Unsupervised