laugh like a drain
US /læf laɪk ə dreɪn/
UK /læf laɪk ə dreɪn/

1.
放聲大笑, 笑得前仰後合
to laugh very loudly and uncontrollably
:
•
When he told the joke, she started to laugh like a drain.
當他講笑話時,她開始放聲大笑。
•
The comedian had the whole audience laughing like a drain.
這位喜劇演員讓所有觀眾都放聲大笑。