Obnutbutt
A person who is as obnoxious and shitty as a nut (sack) that gets stuck in the buttcrack.
"I had to dump him/her because he/she was such an obnutbutt."
"I thought he/she was such a delightful person..but turned out to be such an obnutbtt"
"What an obnutbutt.."
"I thought he/she was such a delightful person..but turned out to be such an obnutbtt"
"What an obnutbutt.."