Wow, I liked this. It was indeed a haiku and a well written one. I enjoyed the way you worded it and made it real for the reader. This was very effective imagery and perfect flow. Great job.
The standard haiku format is a triplet of lines containing five, seven, and five syllables per respective line, so you did get the format right which makes a change, most haikus are done in completely the wrong way and the authors just say 'Oh well I changed it to be more original' well fair enough, but then don't call it a haiku... well that's my opinion on it anyway. So back to your haiku! It's really good, it's hard to make something so limited sound good but you managed. With a haiku you don't have time for emotion and expression, they're all about description and imagery which you've got in yours. Basically it's cute, good job.