Sentence that dosnot have a AEIOU?

The words I was bothered to think about that do not have a vowel is 'why', 'sly', 'try' and 'fry'. And 'why' could be a sentence in its own right? Although many would argue against that I believe 'Why?' is a sentence even though it is said that all sentences must have a verb. All these words end in 'y' because 'y' can have the vowel sound 'i' but it is not a vowel.
To conclude I would say that there a words and sentence(s) that do not possess a vowel.