My lower control arms out back need some greasy loving but I don't see a nipple in which to insert my lube gun.
you have the J&Ms, correct? brian says the supplied grease works so well that they dont need to be lubed later. if you really want to lube them again, you can pull them off, and pull the 3 piece bushing apart and fill it generously with fresh lube. then reassemble and reinstall.
another point to mention is that the earliest J&Ms came with grease fittings, while the newer sets have no fitting.
Try WD-40. I use it on my rod end LCA's and it works great for about 3 months, then it needs another squirt or two.