Oh I love the 'With My Breasts' phrase
'Boobing up'..can't say I'm familiar with the term, although 'boobs' is the prefered word for, um, boobs in my house
For breastfeeding, it's usually 'milkies' in front of the kids & DH, or the rather more delicate 'nursing' (an americanism?) in front of others. Or simply 'breastfeeding'
When I was feeding DD in front of my nephew, he was fascinated because my brother told him I had strawberry milkshake in one boob and chocolate in the other