I think thats a horrible way to teach that lesson if thats what you took away from it...

Let me give you a real world example of the harm being caused by stuff like that:

I grew up going to mandatory "just say no" classes in school, in those classes the cops come into the room and equate all things as "drugs"... alcohol is a drug, marijuana is a drug, crack, heroin, meth... drug drug drug...

Then I grow up watching my parents drink at parties, and none of the horrible things the cop told me were true... I loved my parents, and they certainly didn't act like violent murderous savages after a few sips...

So the cop was lying?

Then I get a little older and see all my peers having a few drinks, having a few tokes off the joint... and they don't flip out and start stabbing people, they don't start raping women and robbing banks for beer money...

So the cop was lying?

After seeing this, after noticing the cop was probably lying, I start drinking some beers at parties, even take a few hits off the joint, i have way more fun, way more comfortable around people and become more social, have deeper more meaningful conversations about interesting topics... wake up the next morning feeling fantastic, feeling like every single thing the cop told me was a blatant lie.

So the cop was lying... what else was he lying about?

Was he lying about coke? crack? heroin? meth?

Luckily i was smart enough to see exactly what was going on but a LOT of kids i went to school with weren't able to distinguish the truth from the bullshit.

When you equate everything as "a drug", when you tell people a few sips of beer turns you into a rapist or a rape victim... you run the risk of everyone then ignoring every good intended thing you tried to tell them.

Honesty is the best policy... "you can have a few beers, but if you drink a lot you'll get drunk and loose control of yourself"

"if you just sit around and get hammered all day you'll make a complete fool out of yourself, probably throw up a lot, possibly get into a car accident or a fight and hurt yourself or someone else"

"you can hit the joint a few times and have a little fun, but if you sit around all day doing bong rips you'll wind up being a demotivated worthless piece of shit"

honesty gets you further than well intended lies, kids aren't stupid, and they are rebellious by nature... they usually assume older people don't know what in the fuck they are talking about... and you are encouraging behavior that enforces that assumption.

stop lying to kids, it's just doing more damage in the long run.