Used to describe someone who is extremely good at Anal sex be it receiving or giving or both, sometimes better than oral sex or vaginal sex
girl 1 : "you were right he left my ass sore and my pussy sopping, never thought anal could feel that good"
girl 2 : "Told you he was a assmancer, whenever we do it he leaves me soaking the bed"
"dat was S-class ass, damn she a true assmancer, had me busting under minute"
Why the fuck are you searching this on Urban Ditionary, You got problems!!
The relatively close juxtaposition of the same or similar vowel sounds, but with different end consonants in a line or passage, thus a vowel rhyme, as in the words, date and fade.
example of assonance "that dolphin-torn, that gong-tormented sea"