I find a hot bath, a large whiskey, fave porn on the TV, lots of foreplay, plenty of lube
& a patient & willing wife to help! Luckily I do have them all, and am flexible enough to be able to reach behind and put my own hand up my ass, after which, the wife will put her own hand up.....
Only after I take mine out, though!! Having your wife's hand up your ass while she jerks you off is truly a mind blowing experience....I find the sensations of the climax (up to orgasm) to be prolonged & extremely intense but the orgasm to be ....muted....as if the climax is so intense, it takes away from the feeling of actual orgasm / ejaculation......the amount ejaculated can also be quite small, although the amount of pre-cum quite large.
Much fun, tho!