Based on some of the popular comics (and with the permission of their creator, and Kelsey Rose) the set-up here is that Harley Quinn has trapped Liz Rainbow in a dungeon and is waiting for her to say the 3 magic words, so she can watch the slime fall from above onto poor Liz. As Liz 'doesn't know what Harley expects her to say, it's not long at all before Liz is getting deluged in green slime. There's lots of gloating and laughing from Harley Quinn, and it's not only slime that Liz triggers. Harley has been collecting spunk from the good people of umd, and when Liz says the trigger phrase "Oh Come on!" she gets covered in cum too.

Liz is humiliated and embarrassed "I haven't had this much cum since my last bukkake" she splutters.

When Harley Quinn explains she is acting on behalf of Kelsey Rose, Liz sarcastically says "Well thank you Kelsey Rose", and gets another sliming.