poppers that u get in the little bottle,u put it under ur nose and inhale a few times or leave the open bottle sitting beside you,ive never done it but it apparently loosens all ur sphincters and makes penetration a lot less painfull and it can give u a nice high stoned feeling.....

i say leave it to the queers........ or unless u like ur wife to penetrate u with a strap on,watever ur in2