水泄不通
seoi2 sit3 bat1 tung1shuǐ xiè bù tōnginferred
English
- seriously congested; literally: even water cannot pass
粵語 — Cantonese
- 非常擠塞，塞得好緊要，郁都郁唔到
Examples
一落雨，紅隧就塞車塞到水泄不通。
Whenever it rains, the Cross-Harbour Tunnel will be heavily congested.
Sources: rime-cantonese, synthesized, words.hk