Gronk's parade day started with him chugging a $500 bottle of wine and ended with him shirtless

Rob Gronkowski's parade day progressed from chugging a $500 bottle of wine to pounding cheap beers while standing shirtless on top of a duck boat. 

In other words, our Gronk only grew up for so long.

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Given all of the speculation about Gronk's playing future, one could surmise his performance down Boylston Street today indicates he is retiring. Surely, this looks like a man who is partying his heart out. 

But that ignores the fact that Gronk seemingly enjoys parades more than anything in the world. Well, except repeatedly telling the same juvenile sex joke (that sentence is written with love).

Rob Gronkowski brought wine to the parade -- pic.twitter.com/ot2pInuvoh

— Def Pen Sports (@DefPenSports) February 5, 2019

As the rolling rally made its way through Back Bay, Gronk shed his more traditional garb –– you know, a shirt with sleeves –– and slipped on a police vest.

Gronk just has a police vest on now --(via @7News)pic.twitter.com/0AHtnsQgKg

— NFL on ESPN (@ESPNNFL) February 5, 2019

Then we got to beer chugging time.

GRONK LIKE BEER.GRONK CATCH BEER.GRONK CHUG BEER.pic.twitter.com/8iA8doDpMD

— Barstool Sports (@barstoolsports) February 5, 2019

This appeared to be a difficult season for Gronkowski. But he played his best football in January and caught two passes on the Patriots' lone Super Bowl touchdown drive. His reward is another championship parade, which once again, he clearly loves.

They don't throw these kinds of events for D-list action movie stars. That's for sure.