masa, my wonderful partner is a huge geek for baseball.  and this summer when he visited the u.s. with me he wouldn’t stop singing the mcdonald’s commercial, “i’m lovin’ it!”.  i can remember driving down the street in okinawa a couple of years ago and him pointing to the navi screen and saying read this.  in my beginner japanese i proceed to sound out ma-ku-do-na-ru-do about 3 times before i realize that i’m saying mcdonald’s.  he thought it was funny.  anyway, his favorite team is the chiba lotte marines.  he, crafty boy that he is, married his love of all things geek and made this shirt. 
he used really soft iron on that stretches with the t-shirt.