(of the sun) to shine on / to bask in (the sunshine) / to dry (clothes, grain etc) in the sun / (fig.) to expose and share (one's experiences and thoughts) on the Web (loanword from "share") / (coll.) to give the cold shoulder to
晒
=
日
+
西
:
Sherlock Holmes (sh) is using the airplane's bathroom (ai4), but the sun (日) is really strong today. To not get sunburned (晒) and protect himself Sherlock wears a big cowboy hat (西).