Top definition
When your friend makes up shit and acts like it’s a thing everyone knows about, but no, it’s not.
Dude, it’s the Shampoo effect. You’ve never heard of the shampoo effect.

No man, that’s not a thing. That’s the conditioner effect. You just made that up!
by Caiman1 March 31, 2019
Get the mug
Get a Conditioner Effect mug for your Aunt Zora.