To show contempt for someone or something.
put someone on to
To show; to draw someone's attention to something useful or interestin …
show someone a thing or two
An expression used to indicate that one intends to impress others with …
piss on
To express contempt and disrespect for someone or something, or to act …
hold cheap
To have a low esteem for (someone or something); to hold in contempt; …
know inside and out
To know (something or someone) very thoroughly.
paper tiger
Something or someone that appears powerful, strong or threatening but …