When a man and a woman engage in anal sex, then the man takes his penis out and smacks the woman on each side of the face giving her fecal sideburns so she looks like Martin Van Buren.
Post anal sex, the man pulled out, slapped her each side of the face with his dick giving her a dirty van buren.
The combination of liquid and aerosol felt when an automatic toilet mistakenly flushes, post-business but pre-standing-up.
Student 1: (Audibly crying and whimpering in a restroom stall)
Student 2: Hey bro. Are you alright?
Student 1: (Behind stall door) No. I forgot to put toilet paper over the motion sensor on the toilet, and I got a Dirty Bidet... I have 4 more hours of classes! (Crying continues)
Student 2: (Shudders, shakes his head with sympathy, and walks away)