That image appears to, at least, fit the federal law definition of obscene:
"The U.S. Supreme Court established the test that judges and juries use to determine whether matter is obscene:
-Whether the average person, applying contemporary adult community standards, finds that the matter, taken as a whole, appeals to prurient interests (i.e., an erotic, lascivious, abnormal, unhealthy, degrading, shameful, or morbid interest in nudity, sex, or excretion)
-Whether the average person, applying contemporary adult community standards, finds that the matter depicts or describes sexual conduct in a patently offensive way (i.e., ultimate sexual acts, normal or perverted, actual or simulated, masturbation, excretory functions, lewd exhibition of the genitals, or sado-masochistic sexual abuse)
-Whether a reasonable person finds that the matter, taken as a whole, lacks serious literary, artistic, political, or scientific value.
Any material that satisfies this three-pronged test may be found obscene."
https://www.justice.gov/criminal-ceos/citizens-guide-us-federal-law-obscenity