Another quack...
After making nasty faces at me and mouthing 'shut up' and a variety of less pleasant things than that to me at a school family picnic I finally said 'please stop, the girls don't need to be subjected to this' and his response:
"I am making a conscious effort to send you non-verbal messages to let you know my feelings. My T says I should express myself and bc I am doing it non verbally the girls aren't aware of what I'm doing and it's not impacting them".
I turned away and honestly had to stifle a laugh and a desire to scream QUAAAAACCCCCKKKKKKK!