舅
=
男
+
臼
:
Joan of Arc (ji) wants to go swimming with her maternal uncle (舅), but first she has to wash his mankini (男) in a large mortar (臼) in the outhouse's bathroom (ou4).
嫂
=
叟
+
女
:
Because Bessie Coleman (s) is married to the old gentleman (叟) she is Socrate's (s) sister-in-law (嫂). They're all meeting in the aorta (ao3) for a family gathering.