Topless saxophone, drunk push-ups, booze chuggin' with his bro ... yeah, retirement is going GREAT for Rob Gronkowski!!
The future Hall of Famer turned all the way up at the JEMAA, The NoMad Pool Party at the Park MGM over the weekend ... where Gronk decided to put a full SHOW on for the crowd.
Someone told him to do push ups -- so he did 'em.
Someone gave his brother a bottle of vodka -- so he slammed it on stage!