Megan Thee Stallion is willing to go all out for her fans.

During a recent event, Megan Thee Stallion posed with her fans -- ala Chris Brown -- provided they bought a copy of her new Traumazine album.

She even let some of her fans smack her famous booty.

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Did the promo work?

Meg's album is projected to do a very mid 58K in its first week.  8K will be traditional sales and it's unclear how many of those came with a booty smack.