As many have noted in the comments, in various ways, do you have any doubt the stuttering clusterfail 51% call President would do this to Limbaugh, Beck, O'Reilly, Hannity, ect. if he thought he could get away with it? This is exactly what small little insecure men do.
Any doubt whatsoever?
What probably happened is that his ex joked to someone she couldn't find his small pee pee under the flab, and it got back to him.