I know of a teacher who called a child a dipstick in the playground a few years ago.
Child went home. Dipstick got turned into something v different, d and h. (something your neck holds up)
Parents came in all guns blazing. Steam, fiery breath, about 6 on the Richter Scale.
Witnesses sought. All aged 12.
Parents foreign. Teacher explained 'dipstick' was term of endearment. Not understood. How could anyone call their children something used to measure oil in a car engine??? noooo nooo, must have been Richard's Head.
Teacher exasperated. Went home. Found a box set of only fools and horses with Del Boy calling Rodney a 'dip stick'.
Exhibit A next morning. BBC boxed set produced. Parents recalled. All guns blazing.... "what is zeeeee only foools y hooorrssseeeeees"
dvd played but just at the bit where Del Boy calls Rodney "you plonker".... ahhhhhh wrong bit!
"what is zeeee plonker meansssss?"
More exasperation. Ahhhh You Tube. Type in 'Rodney you dip stick'. Bingo.
I mean seriously, what a waste of time. Now in all fairness, I didn't hear Del Boy go "Rodney, you are a right pain in the ar**" but at least there's no confusion. States just what it says on the tin. Or butt.
Doubt it would come up in the Christmas Special repeat.