Funny I remember this, but it was one of those pens with the 4 inks. You know the ones: white bottom, light blue top, and then the red, green, black and blue inks.
A couple months later, I used a 10-ink pen, which was I guess was about 6" long and 1 and 1/2 inches in diameter; they were popular with kids in the late 80's. I enjoyed that one so much. I think that might have been when I really thought I was gay for the first time. I might have been 12 or 13.