Possible Clues:

• In the fish the back side is not smart
• Dowdy boozer swallowed back end
• Low part embraced by bass, say — that's plain
• Badly-dressed seafood stuffed with cut of meat
• Fairly drab Friday food? Bring in the meat!
• Unattractive bottom: seek compliments about it
• Search encompassing part that remains unattractive
• Being badly dressed try to elicit response when bottom's tucked in
• Dowdy swimmer keeps bottom covered
• Dowdy toper similatively pinching bottom