I remember when I was a little girl, my friend told me that a man’s penis size is half the length of his shoe size. Well, Jason Derulo revealed in this TikTok video that he wears a size 10 shoe. As we all know, he is not even close to 5 inches. He is at least twice that. Now, I have to look at his thumb to see if it is a third the size of his Derulog. Gotta love these old wives’ tales.