Surprisingly - or maybe not - this game feels for me more like a mix of "Leisure Suit Larry", "Monkey Island" and "Day of the Tentacle". Certainly quite erotic sometimes, but nowhere "turning me on".
I have to say, I love this game nevertheless or because of this. I love the humor and absolutely the art style, which seems lack a bit in the sex scenes (different artist?). But most of the time I skip the sex scenes anyway...
An exception might be Jenny and Eve, which are my favorite characters.
Usually I neither like incest nor milfs nor anal nor exaggerated big penises or huge boobs - but here it fits the story.
This is a fun game and the cave plant blowjob is just fitting well into this silly act.
My 2 cent.