Ben 10 is a young man who is in a sexual relationship with a cougar/milf/older women. It is almost like South Africa version of sugar mama but instead it is what you would call the man. This slang originate from the Western cape region of South Africa.
Did you hear Eric is dating a 50 year old while he is in 20s a real Ben10. Ben 10 is a young man who is in a sexual relationship with a cougar/milf/older women.