I had to dig deep to find a poetic form starting with “X”.
This explanation is from Judi Van Gorder:
Xiaoshi, (small poem,shi = poetry / xiao = little, diminutive or small) is a genre of Chinese poetry from the 1920s. It is a fragmented poem with minimal explanation. It teams seemingly unrelated images with little indication of cause and effect. The frame is at the discretion of the poet although in sync with most Chinese poetry, it is common to be written as a quatrain.
Here’s my attempt…
sweat beads on brows
muscles pulse, playing heart beats
audible breath turns to pleasure moan
somewhere–lovers lay spent
rooms filled with the scent of sex