Lubrication on nipples creates a whole new level of euphora for me.

1)crossing my arms works better for me. Most likely because of comfort, its just easier.
2) when i use lube, it reduces the sensation for some reason.

Many creams and lotions desensatize the skin a little as they contain chems or organics that well... alter the neuro response. Examples would be camphor or clove oil along with a host of others.

I've been using shave gel for this, when doing it in the shower. No orgasms, but I've got to the point where it was bordering painful that there was no release.

Why not use the fluid that comes out of your penis? It is the perfect natural lube...
If you collect it on the finger tips quickly it does not distract from the aneros feelings by stimulating the glans or whatever. Or between index finger and thumb which is what I do.

While we're on the subject, are you supposed to focus on good feelings in your nipples, and the prostate responds to that? Or do you have to redirect it to the prostate and kind of ignore what ever sensation is going on with your nipples?
Rubbing my nipples helps a little sometimes, but I'm not sure what I'm supposed to be "receiving". Often I get distracted with nipple stimulation and have to stop and re-focus on what the aneros is doing.

Vaseline. Works wonders on your nips and lasts a long time...My preferred nipple lube! I've grown accustomed to nip stim (with or without aneros)...I can cum without it, but it's just not nearly as good!

I use A+D ointment with Supple Nipps. When I remove them my nipples are nicely engorged and coated with lube, which makes for a wonderful sensual experience and fabulous multiple nipple orgasms.

Combine the last two posts and that's where I'm at: I use Vaseline to seal around my Supple Nips so that they maintain their suction. Love my enlarged, sensitive nipples and am really looking forward to adding my MGX to the mix. (Still haven't tried it...)