literally meaning 'make round and press flat', usually to describe someone who is easy going or can be easily swayed
Definitions (粵典–words.hk)
動詞
不停被指使、勞役或任意對待 to treat a person in whatever way one likes; literally: to roll into a ball, to squash and flatten
佢俾條女搓圓撳扁都冇投訴,睇嚟佢哋應該打風都打唔甩。
佢俾条女搓圆揿扁都冇投诉,睇嚟佢哋应该打风都打唔甩。
keoi5 bei2 tiu4 neoi2 co1 jyun4 gam6 bin2 dou1 mou5 tau4 sou3, tai2 lai4 keoi5 dei6 jing1 goi1 daa2 fung1 dou1 daa2 m4 lat1. He doesn't complain anything even through he was treated by his girlfriend whatever she like. Probably they will not break up easily.
參看
搓圓㩒扁
Definitions (Wiktionary)
verb, Cantonese, figuratively
to do anything one desires on something or someone
任人搓圆揿扁
任人搓圆揿扁
jam6 jan4 co1 jyun4 gam6 bin2 to let others do whatever they like on oneself
畀人搓圆揿扁
畀人搓圆揿扁
bei2 jan4 co1 jyun4 gam6 bin2 to be acted on with whatever others desires, literally, “to be rubbed into a ball and then flattened”
adj, Cantonese
allowing other(s) to do anything they desire on oneself