You're not very good at English comprehension, are you? You haven't the slightest real notion of the phrase "double entendre".

dou·ble en·ten·dre/änˈtändrə/
Noun:
A word or phrase open to two interpretations, one of which is usually risqué or indecent.

Also, my use of the phrase "couldn't care less" is completely correct.

If I said I "could care less", that would be the incorrect usage for my meaning, because the fact is that when you speak I "couldn't care" less.

Just think about it.