Several years ago I found two fart t-shirts and gave them to Aaron for his birthday. Last year, while looking on the Internet for birthday gift ideas for him, I came acrosse a great Web site - www.cafepress.com. They have t-shirts and other gifts for every occasion. I found a great one and gave it to him for his 18th birthday - it has a picture of a wooden bar stool on the front, with the title, "Solid Stool Company". Below that it says, "Because there's nothing like a good, solid stool." I like it because it's subtle.
When Christmas came around I looked around for swim-themed t-shirts and came up with this one:
He wears it proudly!