Clearly many of you have not taken the time to read Dr. Bendy's link regarding the Pudendal Nerve.
Apart from the graphics shown there, which highlight the nerve passages that help explain the numbness, perhaps the most pertinent passage is : -
Damage
The pudendal nerve can be compressed or stretched, resulting in temporary or permanent neuropathy. Irreversible nerve injury may occur when nerves are stretched by 12% or more of their normal length.[6]:655 If the pelvic floor is over-stretched, acutely (e.g. prolonged or difficult childbirth) or chronically (e.g. chronic straining during defecation caused by constipation), the pudendal nerve is vulnerable to stretch-induced neuropathy.[6]:655 Pudendal nerve entrapment, also known as Alcock canal syndrome, is very rare and is associated with professional cycling.[18] Systemic diseases such as diabetes and multiple sclerosis can damage the pudendal nerve via demyelination or other mechanisms.[6]:37 A pelvic tumor (most notably a large sacrococcygeal teratoma), or surgery to remove the tumor, can also cause permanent damage.[19]
Unilateral pudendal nerve neuropathy inconsistently causes fecal incontinence in some, but not others. This is because crossover innervation of the external anal sphincter occurs in some individuals.[6]:34
Essentially then, unless a once only issue like busting your crutch on the crossbar of a bike, this syndrome can be a pre-cursor to other health issues & frankly shouldn't be happening just by sitting down on your fat butt. Not something to be ignored IMHO, but it's your life.....your call.