Ear cleaning seems like a decidedly weird sort of foreplay... until I remember the Nisemonogatari 'toothbrush' scene.
Ah...
Hey, mom.Sanako-san's Ear-cleaning CourseHmm?
What is it?Don't move around~Can you teach me how to get good at ear-cleaning?
I wanna do it too...Ear-cleaning?
Sure, but...You want to do it...Did you get a boyfriend!?You have a boyfriend, don't you!!?
I want to meet him!
Call him over right now!Daaah!
That's not it!Nee-chan, you have a boyfriend!?I DO NOT!Oooh...Ah-!Don't tell me!