Clearly...that's not mandingo , much thinner , and not as long.
However , i've seen girls (ones who are specialised in circus acts) who can easily swallow thick & very long balloons , (and swords )...So i don't think deepthrowting any dick (even a huge one) is an impossible task.
I remember this one girl i think her name is Annette Scharz , some blond actress from germany , she once swallowed Napier's entire cock...that girl is the deep throat queen of porn.
watch this...
YouTube - balloon swallow
(obviously there's probably some kinda trick...she probably finds a way to let the air go away)