These jokes are too difficult ~ ~ ~ ~ Well, help me solve them.

The first bat said, "Boss, have a glass of blood." It refers to the first time xing. made friends, and 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 gang. Cross, lemon blood refers to post-coital bleeding with poop color flowing out of gang. The other two are disgusting and the second one is a strange hobby;

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

The second one is the same as what was said upstairs ...

The first classmate told me. ...