shrimp
Shrimp shrimp shrimp shrimp shrimp shrimp shrimp shrimp.
The sentence is a recursive parse where shrimp (noun) are caught by other shrimp (verb), which are themselves caught by yet more shrimp — exploiting 'shrimp' as both noun and verb.

Meanings (pronounced /ʃrɪmp/)
a small marine crustacean with an elongated body, used as food
- She ordered shrimp scampi.
- Shrimp is a staple of coastal cuisine.
to catch or fish for shrimp
- They went shrimping at dawn.
- Local fishermen shrimp the bay year-round.
Word origin
From Middle English shrimpe, possibly from Old English scrimman ('to shrink, dry up'), from Proto-Germanic *skrempaną. The name describes the shrimp's curled, shrunken body shape. The verb 'to shrimp' (to catch shrimp) is derived from the noun, parallel to 'fish' the verb deriving from 'fish' the noun.
Fun fact
The same recursive trick that works for 'buffalo' and 'fish' works for 'shrimp' — any word that's both a noun and a verb can in principle generate sentences of arbitrarily many repetitions. The 'shrimp' sentence parses as 'shrimp [that] shrimp shrimp [that] shrimp shrimp...' with nested relative clauses, a grammatical construction English permits in theory even when it sounds absurd.