With a ruler ?
Honey ... rulers sting a a bit ... but a "whoopin' " is Mr D. (9th grade, all boys tech school .. Algebra teacher ... favorite quote .. "Don't understand algebra .. learn the rules - apply them - and you will pass." ) telling you to go down to the teacher's lounge and get "my friend" (a pool cue with his name on it) and after class was done (a few minutes early .... you were called to the front of the class ... told to assume the position ... and one whack with the butt end of the cue across your ass.
THAT, sister ... is a whoopin' !
Go 'head ... I dare ya' ... just try to not cry in front of 30 guys.
Oh yeah ... the infraction?
Talkin' in class.
Yes ... the above account is true ... it was me.
My boys know this.
Do I have to discipline them? No, they're straight A, model students because they know what is expected of them. I don't expect straight As, but they know I do expect them to apply themselves, pay attention, do their work, etc. And yes, I am an involved parent, helping them study (when asked), and with homework (again when needed).
Sounds like maybe the mother needs a whoopin'...