Acceptable forms of answering a question to ANY ADULT by a child.
Yes mam, yes sir, yes please, no mam, no sir, or no thank you.
Unacceptable forms of answering a question by children IMHO.
Yes, no, yeah, nah, uh huh, nope, sure, not a problem, whatever, yeppers, noppers, or any nodding or shrugging!
Being someone who works with other peoples children on a regular basis this REALLY bothers me that parents don't teach their children this anymore. Another thing that really bothers me is to be speaking to someone face to face and them say LOL when they hear something funny. By saying LOL and not actually laughing I take that as an insult. Maybe it is just me, but I think emotions should be expressed with emotions and not letters!