PnF : Mother knows best (Private with zgwrox)
 

It was a normal day in Danville. Nothing too special, not even the Flynn-Fletcher boys came up with anything. For fact, it was even too quiet in the house, as Lawrence and Candace left for a couple of weeks for father/daughter bonding, with Candace especially asking her brothers not to get on their mother's nerves too much before leaving.
Linda just finished up cleaning the attic, when she found a box with baby stuff, dropping it on the living room, as she started going through it

Phineas and Ferb walked in to see their mom looking at their old baby stuff.
Phineas: Hey, mom. What's that?

Linda smiled at her sons
Lin : Oh, that? Just some of your old baby things. Neither me or your dad could bring ourselves to get rid of them
Linda picked up a little T-shirt, chuckling at it
Lin : I still can't believe you were that small

Phineas: We used to look so cute in those! I would like to be a baby again!
Ferb: Me, too!

Linda was a bit surprised by that, but a smile grew on her face
Lin : I do miss my babies too...

The boys giggled and laid down on the table.
Phineas: We're ready, mommy!

Linda chuckled, bit then realized
Lin : But we don't have any baby things. Ones, that left are too small for you... I'll look those up on internet, but let's put you in those old pull-ups, from your bed-wetting days

Phineas: Okay, mommy!
Ferb smiled and put his thumb in his mouth as he began to suckle.

Linda chuckled at two of them, before she got out two pull-ups, with prints of cars, and put them on her sons with adding baby powder as well
Lin : There. All nice and dry. Now, my little ones can have no fear of having an accident over themselves
Linda tickled boys on their tummies

The boys giggled as they were tickled.
Phineas: So, should we go shopping for some new clothes?