The 37-year-old comedian, who has been clean for over 10 years, said that he suffered such a bad gash to his leg during a crazed day in a park that doctors warned him he might lose it, the Sun reported.
He added that he woke up in hospital and the doctors told him that they would have had to amputate his legs if it had gone the other way.
Photos: Katrina Kaif, Shamita Shetty at Mumbai airport
Photos: Varun Dhawan, Alia Bhatt promote 'Badri...' on 'Dil Hai Hindustani'
In pictures: 15 facts about kissing that will surprise you
Photos: Shahid Kapoor and Mira Rajput at cafe in Bandra
Photos: Deepika Padukone, Neha Dhupia and Soha Ali Khan at event