绍
=
召
+
纟
:
When Sherlock Holmes (sh) was in the middle of taking a shower in the aorta's bathroom (ao4), the water suddenly stopped an he was unable to continue (绍). Now he wants to call the janitor over the intercom (召), but the connection is very slow. It is because inside of the intercom sits a very small silk worm (纟) which listens to Sherlock Holmes and then carries on (绍) the message to the next relay point.
召
=
刀
+
口
:
Mnemonic symbol: an intercom to call everyone together. James II of England (zh) prepares a few mandarins (口) for everyone in the aorta's bathroom (ao4) by cutting them with a cleaver (刀). As he is finished he calls all the blood platelets together (召) over the intercom (召) to come over and fetch a piece.