English · Slang Candidate 18+

wife's best friend

Proposed by a contributor, not yet supported by evidence.

Meaning · English

The penis.

Where it’s used: Used American English

Your piece of pork, your wife's best friend, your percy, or your cock.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Common questions

What does “wife's best friend” mean?

The penis.

Is “wife's best friend” formal or informal?

wife's best friend is generally slang.

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