Fuck (one's) brains out vulgar slang
To have sex many times, usually within the whole daytime or nighttime period
Someone only loves their sexual partner who has a large penis.
Used to imply a sexually promiscuous woman
To make love or have sex with someone
When one has pubic hair, he or she is able to have sex.
Used to refer a person who one has a sexual relationship with but it often lasts one night
The verb "fuck" should be conjugated according to the sentence's tense.
One needs to understand the basic techniques or primary details of something before taking actions that require greater skills
Peter failed because he did not learn to walk before he ran.