It was a pleasant day for Honey Boo Boo and family, while being interviewed by Steve Harvey ... until her sisters decided to cut the cheese during the interview!

As Mama June was talking about her daughter Pumpkin "changing boyfriends like she changes her underwear," one of her sisters (while warning her family and Steve) that she was passing gas! Then her other sister followed suit. 

Steve's reaction is priceless! Check it out below: