'Chopsing' is a Welsh slang term for arguing or saying disrespectful things to someone:
EG:

Person 1: "Oh he is chopsing to you mind,"
Person 2: "I know, I'll just chops back like"
by Elizabeth-Hailie October 2, 2009
Get the Chopsing mug.
Talking incessantly or for an extended period.
Is he still chopsing to his mates? That boy has more chops than Sainsburys!
by Buxom_Monkey April 6, 2012
Get the Chopsing mug.
to talk back to, be mean
Me: Did u do anything fun today?
Welsh Bitch: Yeah Chopse to a Portuguese dude.
Me: WTF does chose mean.
Welsh Bitch: To talk back or be mean.
Me:W/E bitch
Get the chopse mug.