To truly test the theory Timmy tugged the tiger’s tail
Timmy’s tiger tale tragically transcended this thing. Terrible!
Too true, too true.
Unfortunately, Umberto’s umbrella unfolded upwards.
Vinnie vexed vampires vhile violining voraciously.
Warren warned William while Wendy went walking west.
Wee Willie wrongly wants warbling Warren’s wily wife, while waxing Warren wrongly wants witty Willie’s wonderful wife. Woe!
Xavier x-rays xylophones.
Xavian x-rayed xenomorphs.
(Jinx!)
Well, there aren’t that many x words 
Yesterday Yvonne yelled; yearly, you yodel.
Zebediah zippered Zack’s zebra.
I’d call that a roaring success.
Asa asked about astronomical assays.
Bob beat betty’s bongos
Angelina bought cropious donuts, every flavor - glazed, hot, inside jelly - knowing life may not offer peace quite readily, since time undoubtedly varies with xenomorphic, yearning zest.
Cheri cheerfully composed cantatas.
Dearest Darren doesn’t dare divine Deborah’s desperate dreams, dreading dire, devious delusions.
Eddie entertains eating Edna’s eyeballs every Easter.