Top may also describe a broader personal identity involving dominance in a romantic or sexual relationship however, this stipulation is not a requisite element of being a top. Top is also used as a verb meaning 'to penetrate another'. 19th-century erotic painting depicting Hadrian 'topping' Antinous (detail), by Paul AvrilĪ top is usually a person who engages in the penetrative role during sexual activity for men who have sex with men (MSMs), this often involves penetration using the penis during anal or oral sex.