In the wake of Russia's annexation of Crimea, some Ukrainians have been boycotting Russian goods. And some Ukrainian women are boycotting the most basic "good" of them all.

The "Don't give it to a Russian" poster, with hands in the shape of a vagina. (Facebook)

The campaign, "Don't Give It to a Russian" encourages women to "fight the enemy by whatever means," on its Facebook page.

The initiative borrows its slogan from the Ukrainian poet Taras Shevchenko’s 1838 poem, Kateryna: “Fall in love, O dark-browed maidens, but not with the Moskaly [the Russians]," according to the news site Global Voices.

Like any respectable guerrilla group, the campaign has created a line of merch:

And just a few days after launching the effort, organizers have succeeded in causing a stir on the Russian Internet. Much of that stir has, sadly, involved Russian bloggers calling them prostitutes.

The campaign's Facebook page is written partly in Russian, which has raised questions about its authenticity. But one of the women who set up the page is Katerina Venzhik, an editor at the Ukrainian news site Delo.UA who lives in Kiev. And the use of Russian could also be a sign that opposition to Moscow's actions has spread beyond Ukrainian-language speakers in the country. About two out of six Ukrainians speak primarily Russian.