Do noogleberry/similar breast pumps for "natural breast enhancement" actually produce (permanent, substantial) results, or are they just snake oil for coping hons and breast expansion fetishists

pic related, it's my mspaint doodle of a man i saw on the noogleberry forums while looking for answers

>>40580801 (OP)
Cant speak for the pumps, but guys grabbing really rough made them grow. Like, really rough to the point where it hurts. Also, was this your sketch specimen?

>>40580854
nah it was a very dad-looking cis man in at least his 50s