It sounds like parroting from somewhere, but most toddlers do go through stages of heavy preference for one parent or the other. It'll be some crapola tv programme or other, or a well meaning but slightly ancient aunt. They do pick up on the slightest things and magnify them by a million, leaving you mystified.
One of mine once declared in all seriousness that he didn't want to get married because of all the cooking and cleaning, and his sister (god preserve her) said 'but the cooking and cleaning would be your wife's job'. This is a kid in a house where dh does literally all the cooking, all the ironing, and a damned good proportion of the cleaning.
It's ridiculously insidious. But it will pass, as long as you just laugh and ignore it, and redirect to more appropriate responses.
That said, I'd also be tempted to milk it for all it was worth and get dh to do all of the childcare for as long as possible... So that they can, y'know, bond, over bath time, and dinner time, and bedtime, and playtime, and snack time, and breakfast time, and... Grocery shopping. Yes, definitely.
And you can, y'know, go and do girl's things, like fixing the car, or swigging beer and watching the football.