This poem from Clark Ashton Smith (CAS) was unpublished in his lifetime, and is not available on The Eldritch Dark, so here's the complete text:
Which was above and which below?
Erotic themes are not unusual throughout CAS' poetic works, but "Two on a Pillar" is substantially more ribald than is the author's norm. Given that CAS did not seek to publish this poem, one can assume it was created as a bit of fun, taking aim at religious ascetics and their lives of deprivation.
If nothing else, this poem can be enjoyed for lines like "Jiggled dizzily to and fro / And lustily he tried to fill her". Not only is that unusually explicit for CAS, but there's also a hint of Edward Lear's nonsense poetry in there, with a touch of shock value to keep the sophomoric quality of the work from being a complete disappointment. For comparison, see Lear's "There was an Old Man of the Nile":