I use a cock tube and an automotive hand vacuum pump (brake jobs). Have done it off and on for a few years (more off than on) but I used Nipple Sups before they went out of business. My nipples used to be regular pea-size guy nipples but after several years of the Nipple Sups they have grown about 3x and are so sensitive. All suction devises these days are large and cumbersome (too big to wear under normal clothing). The company (Nipple Fun Wear) stopped marketing and I guess they sold what they had produced and closed their doors. Damn shame! There were times when I’d wear the Sups all day long. They’d hold enough suction to keep the nipples a little swollen and after months and years my nipples slowly grew in size and intensity. Wish I had some “before” pictures to share. The “after” pictures I’ve posted.

I am a huge fan of nipple toys. I've been using Supple nips from nipplefunwear and have noticed major improvement not only in my nipple size but also in their sensitivity. My nipples are hard-wired to my cock - I've ejaculated simply through nipple stimulation and it's fucking awesome!!

Oh yes yes this sub Grandpa has another older cocksuker but he has ED and doesn’t get hard but pumps his nips and when he cums over he forces me to suk his erect nips before he force my clitty hole on his nips and allow me to cum

Love it!

Love it. Makes my smallish cock larger [ fatter]
My nipples went from small flat dots to BIG nipples [ pierced]

I use nipple toys regularly mostly suckers with the hand pump ! At first they were so super sensitive after a pump that i could not wear a tight shirt but now they are much bigger and less sensitive ! After a pump my nipples are about 7/8 inch long and after the swelling has gone down they are still about 3/4 inch and are very noticeable in a light tee shirt ! After about 5 years of pumping my nipples regularly my breasts have grown some what and now when i pump my nips i will get a clear fluid in the sucker ! Is that man milk ??

I have been into my nipples for years now. Also into other men's nipples. I have used various nip pumps and clips/clamps, often with weights. After all this time, my central nibs are bigger and thicker than most men's. My nipples attract attention because the nibs stick out much more than 'everyday' men's nips. I love to use toys on my nips and often cum from nipple play alone. I like nipple play from mild to wild and like it when my partner feels the same way/

I’ve recently gotten into pumping. I like how it makes my cock feel. Nice and fat. I’ve done nipple play often, mostly on my wife though. I also use one on her clit. I love making her clit nice and plump then gobbling it up.