Sucker's lament

IBEENHAD

Think of what someone might groan after falling for the same trick twice.

This clue plays on the phrase "I've been had," which is what someone might say when they realize they've been tricked or taken advantage of—a sucker's lament. The answer "IBEENHAD" is a phonetic spelling of that phrase, dropping the apostrophe and "v" to fit crossword style. It’s a common cryptic or punny trick where the written form mimics how the words sound when spoken aloud.