You know that sweatstain that ladies get under their boobs? The sweat pours down the central boob canal, and out the sides in the underboob regions - thus forming the sweatstain in the shape of a mustache... aka, the Boobstache.
"yo, check out the handlebar boobstache on the girl on the elliptical."
"eh, I'm looking at the porn boobstache on the girl twerking out on the treadmill!"
"When I was around 11 or 12 my brother-in-law, who is a physician, gave me the "random fact" that the medical term for breasts is actually BOOBACLES, thus making "boob" the slang term." -ghost-from-tomorrow, Reddit.
*Having a hard time as a male to look a woman in the eyes because of her distracting front torso
*Having a hard time as a male to focus on ANYTHING because of a distracting female torso in sight
I didn't noticed the yellow car, because I was boobstracted by Caroline. Sorry, you were saying? I was totally boobstracted, apologies.