Most commonly, this is a crude or vulgar slang term used to describe physical appearance. Unless you are referring to a very specific regional song or a literal "pearl" (Moti) context, it is generally considered offensive in polite conversation.
There are social media trends where similar-sounding phrases are used in deep-line poetry or regional Sindhi songs to talk about themes like love, loyalty, or "heavy" emotions. However, the specific combination "moti gand" is rarely used formally. 3. Slang Evolution moti gand
In Urdu and Hindi literature, Moti translates to "pearl" . Most commonly, this is a crude or vulgar