A compound word mixing the words sadism (sexual
pleasure from hurting others) and masochism (the sexual pleasure from getting hurt. Psychologists recognize this as a sign of sexual/physical abuse from a person's past and it is also a psychological disorder. It is part of BDSM (bondage & submission, dominance & submission, and sadism & masochism). People
aren'
t always a fan of doing both, but it is common.