It’s slang for postpartum buttocks that have grown larger, saggier, or flatter than before. Reports have shown that many mothers experience this during and after pregnancy.
The term “Mom Butt” or “Pancake Butt” refers to a loss of “junk in the trunk” or a flat butt that commonly appears after childbirth.
Weight gain and belly expansion are two factors that cause your butt to change during pregnancy but, changes in skeletal, postural, and alignment also play a role.