vveronica, you may not mind, but i can almost guarantee others may not share the same sentiments...
i almost always try to focus my thoughts elsewhere, but it only works if i'm under pressure. allow me to elucidate:
if it's the middle of a class period, and the hottie three seats up bends over to grab her book from the floor and exposes a cute green thong, i'm pretty much done for. i'll try to concentrate on the lecture, on ugly chicks, on videogames, on upcoming tests... you name it, and i've tried to send my thoughts that way. but it never works. in fact, i would swear it has an opposite effect; the mere act of trying to concentrate on something else only makes the problem worse. i'll sport a throbber for a good half-hour before i'll finally get frustrated and tuck it into the waistband of my boxer-briefs. the uncomfortable placement will generally do what my wandering thoughts could not...
however, if there're two minutes left to class, and Reuben decides he's gonna stand at attention, my mind will amplify the possibility of embarrassment to monolithic proportions, and the purple-helmeted warrior will deflate like a popped balloon.
so,
Kazron, i'd say enjoy the mild annoyance of a stiffy if there's no reason to worry. when things get stressful, that'll generally take care of what mental images featuring old men cannot.
good luck!
*edit* yay for uncompleted sentences!