[Norm Lenhart]

I’m thinking someone’s family tree didn’t branch.

“Do you take your sister to be your lawfully wedded wife”

“S3!t yea lets’d git’er done!”

“I now pronounce you brother and wife...er, Husband and sister...er....ah... Oh hell where’s the shine, I need a drink”

[MadMax, the Grinning Reaper]

I love the “Tree Branch” joke.

In some cases, some family’s lines fell out of the tree.

Old joke:

“If a man and woman get married in Arkansas, can they still be brother and sister?”

[ApplegateRanch]

That gruesome twosome are the ex-wife and her brother, so they should look related.

Here's the entire gleesome threesome: