Kick them in the butt

"Anyway, if they make any trouble for you four make sure that you all kick them in the asses." Yu Dong poured the hot water into a large bowl before picking up a clean cloth from the cabinet that was resting outside the kitchen. " Don't think about it if they bother you, you can——" she raised her leg and then made an action of kicking someone. " Just kick them like this, I will back you up, all right?" 

After she finished giving defence lessons to her husbands, Yu Dong walked toward her room. Once she was inside the room, Fang Chi turned to look at the other two and said, " She...She was joking right?" 

" Knowing wife, she was being serious." Chen Mi knew Yu Dong's temper, she would rather deal with the aftermath rather than watch them being bullied, this was what he has learned after staying with her for so long. " I always wanted to try kicking someone, I wish they would find trouble with us."