Rafael Valadao must have under estimated the size of his body when his attempts to escape jail ended in humiliation – when he got stuck in a hole he helped smash in his cell wall.
Firefighters had to free the 16-stone (approx. 102kg) prisoner when his belly stopped him making his break for freedom.
To make matters worse thereby compounding his embarrassment, prison guards stood round laughing as the operation to release him swung into action.
Authorities were last night hunting for a thinner cell-mate who managed to escape first.
Two other inmates waiting behind Rafael also saw their hopes of freedom thwarted by the unexpected hitch in their escape bid.
The four hatched their escape plan at a jail in Ceres in the central Brazilian state of Goias.
Firefighters stepped in around 2am on Tuesday after the two inmates waiting their turn behind Rafael failed in various attempts to push him through the hole they had made with a metal bar.
He was later taken to hospital under police protection with a suspected broken rib.
A police spokesman said: “He was screaming with pain when help arrived.
“He seemed to have underestimated the size of his stomach.”