to not care at all.

Frankly, I don't give a rat's ass about her.

• know through and through
• know way around
• know way around something
• know way around somewhere
• know what are doing
• know what are talking about
• know what hit
• know what hit you
• know what's what
• know what you are doing
• know what you are talking about
• know where stand
• know where to put
• know where to put yourself
• know where you stand
• know whether are coming or going
• know whether to laugh or cry
• know whether you are coming or going
• know which side bread is buttered
• know which side bread is buttered on
• know which side your bread is buttered
• know which side your bread is buttered on
• know which way to turn
• know your onions
• know your place