No, you're not excused, but I understand your confusion, so here ya go:
Dictionary
Definitions from Oxford Languages
f**k
/fək/
vulgar slang
verb
1.
have sex with (someone).
2.
ruin or damage (something).
noun
an act or instance of having sex.
exclamation
used alone or as a noun or verb in various phrases to express annoyance, contempt, or impatience.