Be careful! Don't let them fall on the ground. (Suggesting that there are so many things and may require lots of efforts picking them up after dropping.)
Cantonese
唔好搞佢啦!
唔好搞佢啦!
m4 hou2 gaau2 keoi5 laa1
Don't disturb it!
Examples (Wiktionary)
Cantonese
唔好搞佢啦。
唔好搞佢啦。
m4 hou2 gaau2 keoi5 laa1.
Don't bother him/her/it.
Cantonese
唔好搞我后面!
唔好搞我后面!
m4 hou2 gaau2 ngo5 hau6 min6!
don't mess around behind me! (or: don't mess with my rear!)