To be fed up every time "he's tired" is trotted out as an excuse?

[Happyyellowcar]

Had play date with DS1's (both are 5) "friend". Friends mum said at the beginning that he's "very tired..." Which is code for: his behaviour will be appalling yet again. This friend hits, bites, pokes, pinches etc all through the time we were there, both in front of us and when they were playing by themselves. This boy has been "tired" at EVERY play date we have had for THREE years! His behaviour has not improved and I am so fed up with this excuse! I'm really good friends with the mum which makes things very tricky. AIBU to just accept this excuse every time? Should I say something?

I am a wimp at confrontation too, but wouldn't allow ds to continually be hurt. I would tell my friend that ds has been in tears and said he doesn't want to come to play anymore because he keeps getting hurt and take it from there (total cop-out I know, but at least it starts the conversation).