し	も
下

noun

1. lower reaches (of a river).
2. bottom, lower part.
3. lower half (of the body, esp. the privates), feces (feces), urine, menses.
4. end, far from the imperial palace (i.e. far from Kyoto, esp. of western Japan).

takes genitive case の

1. dirty (e.g. dirty jokes, etc.).