Got to be raw, maybe some lube if the cock is huge or dry. I love to feel skin sliding on skin, feel every movement, every throb, fat cockhead pulsating gently inside, the ooze of precum up my hole slipping the cock just that bit deeper, the hot pummeling my hole gets, hard rod pumping, hotter inside, till that last moan and thrust as his cock explodes deep inside, flaring wide, throbbing as he spurts hot cum into my hole, big hairy balls writhing, wringing all the cum out of them, and holding him inside as his wet throbbing cock shrinks, plugging my hole. His hot juice being soaked up by my arse.
It's the thought of a man being inside me, hot, throbbing, and leaving his sperm inside for my body to absorb - gets me hard thinking about it!