I used to work with a woman who used 'boob' as a verb constantly.
She had this affected 'posh' scouse accent and used to talk at people, at length about "going to booby group", "giving her dd a boob", "expressing booby juice", how her dd was a "boob monster".
Just writing about her is irritating me, she wasn't even from Liverpool, just nearby, so her fake exaggerated accent compounded the sheer arghhhh-ness of the whole thing.
Also... adults using tummy, yummy, yum etc.