Word difficulty joke

The first bat said, "Boss, have a glass of blood." It refers to the first interest. After making friends, the other two jokes still use such an old-fashioned M.L. way;

The second bat said, "Boss, a glass of lemon blood." It refers to gangs. Cross, lemon blood refers to bleeding after sexual intercourse, with poop color flowing out of the ridge. The other two are disgusting. The second one is a strange hobby.

The third bat said, "Boss, a cup of boiled water." It means kou. Pay, boiling water means saliva. ...

The second one is the same as that upstairs. ...

The first classmate told me. ...