Does giving negative fucks mean you care but in the opposite direction?

In middle school math we used to learn about how the logic of language has a legitimate mathematics analog. For example:

“she is 3 years from college”

is equvalent to:

“she = college age - 3 yrs “

After adding 3 to both sides you get:

“She + 3 yrs = college”

or in english,

“in 3 years she will be in college”

This is all trivial but i think its fun to try to make mathematical sense out of peculiar sentences.
Such as:

“i give negative fucks”

im kind of curious how you jokers would interpret this statement both verbally and mathematically.