食
=
亽
+
艮
:
Mnemonic symbol: a bag of instant noodles.
Sherlock Holmes (sh) went camping in the space station's bathroom (Ø2). As foodstuffs he brought chewing gum (艮) and instant noodles (食), but he forgot to bring his gas stove, so in front of his tipi (亽) He is eating chewing gums all day.
醋
=
酉
+
昔
:
Because Kitty Cat (cu) is chasing the rooster (酉) so often it decided to take revenge. In the space station's bathroom (Ø4) Kitty Cat is about to enjoy a milkshake (昔) into which the rooster poured a good shot of vinegar (醋).