p-o-o spells poo.
O is spelled O.
alot of songs do thatJustin Beiber's "Never Say Never" does that
It spells Google.
Common American and British Spelling Differences
English in 30 Seconds: I before E except after C
Seventh Grader Wins First National Spanish Spelling Bee
Gmail for Beginners - #4 - Tweaking Your Inbox