it seems to be some kind of stuff that guys love to do.but I don't get it .so please .

please

为什么我感觉是趁热打铁的意思。。

I saw this question answered somewhere.Hope this helps : )
forum.wordreference.com/showthread.php?t=97407

Question: When Chandler tells Monica he needs to be in 'a guy place', she suggests that he goes and 'hammers up some dry wall'. What does this mean?
Answer: "Dry wall" is a US term for plasterboard-type boards used for making partition walls between rooms. Basically, she is telling him to go do some manual, physical "manly" work.