Breast pumps exist. And no, a baby doesn't know the difference between a nipple. But some moms are just too stupid to check the nipple to make sure the hole is all the way through. Machining errors, it's pretty common, actually. Fixable with a sterile needle and a bit of finesse.

Pump your milk into a bottle before you leave, It's that fucking simple. You're willing to be a dairy cow anyway. This is just exhibitionists and turd whirled apologists wanting to act like monkeys without being called one.