As if you hadn't already heard enough stories about Robin Thicke to be grossed out by, this one might take the proverbial cake.

In further 'news that you didn't ask for and certainly didn't want to know', the singer's dad, actor Alan Thicke, and his stepmother Tanya Callau told magazine Us Weekly that they regularly get "freaky" to the sounds of Robin's song 'Sex Therapy'. Ewww. Ewww. Infinite ewww.

"You have to admit, it’s a great song to get in the mood," Callau said. No, we don't, missus. No, we don't. Especially not with lyrics like:

"Baby, that's all for you to do, let your body be
I'll lick you down, I'll make you feel like you're out of body
The doctor's here for you
Take you like Twilight, I'll touch your neck
You don't have to say anything, I'll get you wet, yeah
Push you up against the wall, turn you out and turn you on
Yea, yea, whoa"

Surprisingly, it seems that even Thicke Jr. was not impressed by his dad's revelation, if the below tweet is anything to go by...