Its formal name is 'amanual autoasphyxiation', because to pronounce the 'ayn, you simply attempt to strangle yourself without using your hands.

I remember looking up from my grammar book one day I felt particularly stupid and saying to one of my classmates that this language must have been thought up by a sadist on a bad day! To which they replied that he was, in fact, probably having his best day ever.

(I never learned to speak it, properly, but I feel better for having attempted)