Ranked in ascending order of awfulness, and all inexplicably popular:
- MacArthur’s Park — Richard Harris (most obscure and meaningless lyrics ever)
- All Out Of Love — Air Supply (actually, any AS ballad could be inserted here)
- Halleluya — Leonard Cohen (maudlin cheesy tearjerker)
- It Don’t Matter To Me — Bread (beta-male whining)
- Diary — Bread (the ultimate cuckold song)
No links; I refuse to be party to mass vomiting.
Your suggestions on the topic in Comments.