The only reason I put the phrase Ninja in front of Stoker was because many moons back, whilst having a pint in the Ship Leopard in Pompey my full pint slipped through my fingers & the glass landed squarely on the carpetted floor upright, the entire contents shot airborne &, I kid you not, landed back in the glass completely.
Very nonchalantly I picked up the glass, took a sip, sniffed and commented "That put a head back on it" to the flabbergasted onlookers.
That day forth, I was known as a Ninja, my dojo being the Ship Leopard.
(Just for the record, despite many later attempts, the act was never successfully repeated)