Pretty odd situation- wait no, distraction you have there. If
the girls are very much of a distraction to you, try thinking of
something that turns you off (Think of something that disgusts you,
just don't give that pissed look though.). It should work most of
the time. Yes, I maybe an ITE Dover student, but hey, you're not
the only one having this problem, though mine is a minor
variant.
However, if the solution still doesn't work, well... You're on your
own there, unless you do have another form of distraction to pay
attention to. I look at cars as my distraction, but that... I do
end up seeing cleavage if it were a female driver. o>_<o