Unbelivable. This cap which has driven countless people mad was solved within 5 minutes by Blak2oof in Las Vegas. Asked for a statement on his work he replied "well id like to thank all the people who made it happen and where there for me".
ANSWER: You drive me crazy
DECIPHERED: letter U + golf ball teed up thus 'drive' + figure looking in mirror thus 'me' + letter C + stack of hay + Y thus 'crazy'.