morning wood
基本解释
晨勃
英文释义
A morning erection that is naturally caused as the brains enters the REM-deep sleep phase. At this stage, the body's skeletal muscle structure relaxes and causes hypervasodilation in the capillaries of the body, resulting in said erection.
> After sleeping so soundly and having a great night's rest, it is no surprise to wake up with an erection.
上一个单词：morning time
下一个单词：morning-after