But there is method in his madness, for he is a Sheedi devotee seeking blessings for his five-month-old son.
The terrifying event is part of an annual spiritual festival in Karachi, which sees a community of African-descended Pakistanis appease the crocodile - which is regarded as sacred.
During the Sheedi Mela, devotees make pledges to a shrine for the reptiles and then head for the water to offer them fresh goat meat.
Acceptance of the meat is regarded as a sign of luck and property and the faithful believe the beasts won't attack because they are the disciples of the saint, Khwaja Hasan.
The festival begins with a procession of girls who carry dishes of meats and sweets to the crocodile shrine, while Sheedi elders offer prayers and devotees dance in bare feet.
Crocodiles are so revered in the community that they are buried with the same respect as human beings.
The animals are bathed and wrapped in burial shrouds before being buried in a specially-designated graveyard.
Sheedi Mela Devotees Make Offerings to Crocodiles
Source: just-wicca.blogspot.com