Mildly awkward: when a parent gets mad at their kid during parent/teacher conferences and starts lecturing the kid in front of you on the possible lifelong repercussions of their choices.
Ridiculously awkward and completely inappropriate: same situation, but SOMEONE ELSE'S KID. Complete with pulling up the pants leg to show bullet hole scars and saying that he'd smack his own kid's face if he ever talked like that.
Boy, Thursday night was fun.
(Photo credit to spaceamoeba.)