Top is a man who gives another man anal sex.
Simon from love, Simon is a top
The act of giving or receiving oral sex aka Head
"Mannn,Steph have me some top...i nutted all on he face!"
" Girl,i asked Jake to give me some top..he ate me out like it was his last meal"
A top, is a person who is giving during sex not matter the position. Opposite from a bottom, a person receiving during sex no matter the position as well. A switch is both of these things. A top is different from a dom (a dominant person) the main difference being a dom being the person on top during sex and a top being the one giving during sex.
A difference between top, bottom, switch, dom and sub, is tops, bottoms and switches, are only same-sex/same-gender, enby/m, enby/f, enby/enby couples, doms and subs are m/f .
Grace: are you a top or bottom
Hailey: im a switch
Noah: are you a dom or sub
Andrew: im a dom