When you don't always see eye-to-eye with someone, the saying goes to "kill them with kindness." In this case, members of the Australian group "Sparrow Folk" are taking down those that oppose public breastfeeding with sarcasm. Specifically, a song called "Ruin Your Day."
The chorus explains mothers' real motives:
"Everybody knows new mothers are exhibitionists;
taking every chance they get to ruin your day with tits."
Yep, that's it.