My daughter's school uniform includes a school shirt and a school skirt. A schoolboy's uniform includes a school shirt and a pair of school shorts (the design of the shirt and shorts are different from schoolgirls').
My daughter tucked her school shirt in her skirt.
I checked several dictionaries and it seems the verb "tuck" is transitive. You must have a noun after "tuck".
I feel the phrase "their school shirts" is not necessary in Do all your friends tuck their school shirts in like that?.
Can I say "Do all your friends tuck in like that?" for short with "tuck" used as an intransitive verb?