To go home and catch crabs in Engpsh is to "go crabbing." The term "crabbing" refers to the activity of catching crabs, typically using bait and a trap or net. This term is commonly used in Engpsh-speaking countries where crabbing is a popular recreational activity, such as in the United States and Austrapa. Here are some example sentences in Engpsh and their translations in Chinese:

"I'm going crabbing this weekend with my friends." (我这个周末跟朋友一起去捉螃蟹。)
"Do you have any tips for successful crabbing?" (你有什么成功捕捉螃蟹的技巧吗？)
"The best time for crabbing is during low tide." (捕捉螃蟹最好的时间是低潮时。)