While in the stages of foreplay / fetishistic sexual activity:

A woman orders a man beaten over the head with a big leather paddle, the blow is a little hard and he starts acting out-of-it

A woman orders a man to do pushups on the floor in his underwear over mousetraps which set off on his nipples and genitals (offscreen) - he howls in pain (onscreen)

During a bondage scene- a woman orders a man to have a rope tied very tightly around his genitals (he's wearing underwear and we don't see between his legs, but he howls and groans in pain)

A man sitting on a running washing machine has his genitals struck by something inside the machine (offscreen) - he screams in pain (onscreen)

Some sex and "erotic" scenes feature explicit language

Scenes taking place at a house party and a music club feature a great deal of drinking and alcohol