The more things change, the more they stay the same.

Sure, Nicole "Snooki" Polizzi has come a long way from Season One of "Jersey Shore" -- but last night, she was back to doing shots ... with a twist.

During Tuesday's episode of "Snooki & Jwoww," the two reality stars and fiances Jionni La Valle and Roger Mathews decided to take shots of Nicole's breast milk ... because, why not?

Roger clearly wasn't a fan -- as he told Snooki after that "it was like chugging mashed potatoes." Gross.

"So in the last 9 months, the only shot that I've taken is my own breast milk," Snooks lamented after the taste test ... and quickly set out to fix that statement.

She was later seen getting wild at the club for the first time since giving birth to son Lorenzo and she brought her A-game.

Nicole was all over every girl in the joint -- even locking lips for a mini-makeout session with Jwoww!

Motherhood at its finest.

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