because of recent use, a little goes a long
way. Usually referred to when re-gaining
an alcohol buzz. (If you shampoo your hair and ever "repeat", you know how just a tiny bit of shampoo will cause instant lather? that's the shampoo effect)
I had so much to drink last
night, all it took was one beer this
morning to get me buzzed again, gotta
love the shampoo effect!