A testicle which has a freckle located on it. The freckle has the resemblance of a nipple and this in turn makes the testicle have the appearance of a breast.
Frank: Yo dawg, was' up?
Mark: Not much man, just found outlast night that I have a breasticle.
Frank: Daaaang!
The act of ejaculating on the breast's of a woman and admiring as your semen slowly drips down the tip of the nipple; appearing to create an "icicle of semen".
Therefore, breasticle.
Tom- Dude, after Mary gave me the bomb beej, I plastered her chest and gave her a killer breasticle!
Adam- WORD! *high five*