An elaboration of chinny - the stroking of an invisible beard to denote doubt or disbelief. This is extended to a single long stroke of an imaginary ceremonial Egyptian beard, the stroke coinciding with the final "moon" syllable of "Tutankhamun". Differing levels of disbelief are expressed by the length of beard and duration of the "moon".
"My dad only pretends to be a teacher, he actually smuggles flick-knives across Europe."
"Tutankhamun!" (or - "Tutankha-mooooooooon!" with visual flourish)
A sex act, in which the receiver is wrapped in bandages with armsfolded across their chest and is laying face down. When finished, shove the receiver into a sarcophagus while yelling "mummy".
I heard Chris doing the reverse tutankhamun on Tom last night, it sounded wild!
Someone or something that bites your ankles.
To a postman, an ankle biter is often known as a dog.
To an adult, an ankle biter may be a toddler.
To hikers, an ankle biter is sometimes a tick.
And so on.