I'm a little more hesitatnt to jump on the "yippee!" bandwagon with this... Personally, I think that birth control for guys is much more difficult than it is for girls, simply because all you have to do for a girl is prevent one egg (maybe two) a month from getting fertilized, where with guys you've got to stop millions of sperm... and that's every ejaculation!
Also, while many mature men would look at this and see it as a great oppurtunity to further ensure their partners not getting pregnant, I know PLENTY of guys would would be like "OMFG I'M NOT LETTING A NEEDLE ANYWHERE NEAR MY BALLS MAN!" Time will tell I suppose....
Perhaps they could tattoo a little mark on your balls if you'd had the procedure... like a cattle brand.... that way you'd know if your man was "on the gel"
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Sage knows our mythic history, King Arthur's and Sir Caradoc's
She answers hard acrostics, has a pretty taste for paradox
She quotes in elegiacs all the crimes of Heliogabalus
In conics she can floor peculiarities parabolous
-C'hi