Fat rat is probably the phrase you are looking for. A rat is a rodent, and fat means overweight.
Bleak peak is a hink-pink or rhyming word pair answer to the riddle "dreary mountaintop."
shy fly
shy fly
hen penhen pen
Soaked Dog = Soggy Doggy.
fat rat
Rhyming word pair for home for a rodent?
Rhyming word pair for happy boy?
Fat Rat.
pink mink
fat rat
fat rat
fat rat
plump ump
mouse house, rat flat
Using rhyming word pairs to create synonyms of other descriptive pairs is often used as brain teasers for children. For example, an overweight referee is also a plump ump.
Mouse House or Rat flat