That dynamic, unique, juggling, complex motion of boobs as a woman jumps, jogs, or walks. The word saves people from saying 'movement of boobs', a rather awkward phrase that usually needs awkward hand motion to get your point across in public.
ex)
A: Do you remember the boobement of Angelina Jolie at the end of Tomb Raider?
B: Yeah, but I personally think the boobement of Pamela on Baywatch had more impact on the general audience.
The act of a girl wearing a piece of tightmale clothing and stretching it out in the chest area as a result. Typically done by girlfriends stealing their boyfriends' tshirts behind their backs and boobifying them in the process.
ugh my girlfriend keeps boobifying all my favorite tech tshirts. now i have nothing left to wear.