everyone talks about how bruce talks about his 'babies' as if they're just sweet little kids, when they are OBVIOUSLY not (shocking everyone who meets them). but i think dick would do the Exact Same Thing:
dick: "and you're gonna LOVE my baby brother jason, he's so smart, and has such a sense of empathy. but god does he just get bigger every day, they grow up so fast"
enter 6'5 literal mountain jason todd, who looks like he's going to snap someone's neck if they so much as look at him the wrong way.
dick: "sometimes i'm just blown away by tim's genius. i'm always so proud of him when he accomplishes new things, but every time it just reminds me how independent he's getting. he's so full of life too, it's hard to keep up with him."
enter tim, who looks like he's met death and bears all of the world's secrets. although perpetually battered and worn down, he is also, not a baby.
dick: "oh and damian... he's the littlest one, and he's just the cutest, always learning and wanting to be just like his big brothers. he's so sweet too, not a mean bone in his body"
enter damian.. this one fits the size description at least.