To fold in
To pull in
To eat heartily
Also, tuck in wing mirrors and put the aerial down to discourage Vandals.
Also, tuck in wing mirrors and put the aerial down to discourage vandals.
Also think about whether you are planning to tuck in your blouse or wear it out.
Don't forget to tuck in your shirt and put on a belt.
For extra casual occasions, though, there is really no reason to tuck in that shirt.