cocksucker

noun2

1. •
   (informal, offensive) Someone who performs fellatio.

   • After he said the kid was a no-talent cocksucker whose teeth were always in the way ... — 1970
2. •
   (informal, offensive) A very annoying or objectionable person; any contemptible person.

   • I'm extremely happy that I'm not a part of a committee that cocksucker is in.