Wrench baby DS's foreskin back. (Various paediatricians, most parents and grandparents) I bucked the local trend and went pitchforks over the issue of mucking about with tiny foreskins which doctors back home seemed to agree should just be left alone, and they will go on retract without force soon enough by themselves.
Put child in hat, scarf, vest etc because it is April! (and 25 sodding degrees) meaning the breeze will strike him down with a lurgy if you don't.
Also do not allow child to move much in nice weather in case he sweats and that damn lurgy causing breeze gets him.
Fat chance of either of those happening even if I did believe in the lurgy causing breeze issue. DS is evidently part Viking, hates wearing more than the minimum and hasn't stayed still since 16 weeks in utero.
The oddest piece of unsolicited advice (by standards here) is when a man (flanked by his very earnest wife) accosted me in McDonalds to tell me I was breastfeeding wrong. Apparently you should lug about a cot mattress at all times, so you could lie the baby flat to breastfeed when out and about because... reasons.
I did point out that as a non driving parent I already looked a bit like a pack horse and a mattress might just tip me over the edge. But no, mattress to hand at all times was an essential. My English SIL was with me the time, her eyes were like saucers when I translated for her.
Poor woman was already in shock at just how much unsolicited parenting advice complete strangers give random women with babies around these parts. Or maybe I just got so much cos I was visibly "doing it wrong" according to local norms and standards.