Experiences with penis pump bf swimming?

[Speedswimmer]

Hey guys, I heard that a short session with a penis pump will plump up your penis for a few hours afterwards even when flaccid. The kink in me turned his head twice when he heard Anyone know if this is true? I'm used to wearing cock rings under my briefs for the added lift, but it's a pain to hide in the showers or people will think I'm a freak (which I kinda am).

I've never used a penis pump before, so thought I'd pick your brains before I invest.