By default this will generate videos where the cum is already on the face.
I have managed to combine it with:
https://civitai.com/models/1358184/wan-21-penis-cock-dick-lora-t2v-i2v?modelVersionId=1534254
https://civitai.com/models/1350447/wan-cumshot?modelVersionId=1525363
Although the results are mixed. On the example video using all 3 Loras I had this one at 0.75 & the other two at 0.5