Un trabalenguas - Tongue Twisters

Un trabalenguas que apareció en uno de los pizarrones de mi salón:

"Theophilus Thistle, the successful thistle sifter, in sifting a sieve full of un-sifted thistles,thrust three thousand thistles through the thick of his thumb. Now, if Theophilus Thistle, the successful thistle-sifter, in sifting a sieve full of un-sifted thistles, thrust three thousand thistles through the thick of his thumb, see that thou, in sifting a sieve full of un-sifted thistles, thrust not three thousand thistles through the thick of thy thumb.Success to the successful thistle-sifter"