Problem behaviours - U8 team

Hi all, I’m new to coaching and love the challenge. However, one thing I am struggling with is when and how to assert discipline when behaviour falls below an acceptable standard. To give an example, an 8 year old screamed at me today because I said he had a ‘Great right foot’, when he is left footed. I was a bit taken aback as the reaction was rather extreme and it’s not something I would see or tolerate with my own kids. However, when you are dealing with other people’s children it becomes tricky. I will certainly deal with this behaviour head on if it happens again. However, does anyone have any perspectives on how they deal with such issues from their own experience? Get the parents involved is an obvious one…. Maybe address the wider issue of respect within the group? I’d be keen to hear from anyone with experience and advice.