When someone who is kissing you and overlaps their lips on top of yours and basically engulfs your lips with theirs, often at times sliming you with their saliva.
My date was such a bad kisser, he kept donkey kissing me. It was just nasty.
"Last night I was lying, on my back, with my knees up to my chin, spreading my ass apart. Then Celsie squatted over me and halo-dropped her anus onto mine. Best Australian Kiss I've ever had since, Ada,m."