Bubba thought that tuckered out meant to take his shirt off.
In the 17th century bibs of all sorts were worn by adults to protect their clothes. At the same time women also wore tuckers. these were made of lace or muslin and were tucked into the top of low cut dresses and ended in frills at the neck. On special occasions people wore their best bib and tucker and, over the passage of time, it has been forgotten that only women wore tuckers.