to compose the confession/ testimony with someone, to make sure two people both say the same things
Definitions (粵典–words.hk)
動詞
同其他人一齊俾假證供 to conspire to give fake statements
兩個證人句句都一樣,仲唔係夾口供?
两个证人句句都一样,仲唔系夹口供?
loeng5 go3 zing3 jan4 geoi3 geoi3 dou1 jat1 joeng6, zung6 m4 hai6 gaap3 hau2 gung1? Their testimonies are identical word for word. The two witnesses conspired to give false statements, didn't they?
動詞
一齊作一個故仔,然後再其他人講,以免大家講嘅嘢有矛盾 to come up with a coherent story before telling others