X-Y jelly

Pre-cum that oozes from a guy's love-pipe and helps to lubricate the genitals during intercourse. Y-Y jelly is the slippery stuff that a lady exudes from her love-tunnel.

X-Y jelly and Y-Y jelly can indeed make a nice combination during sex, but often you will need a little K-Y jelly for a truly pleasant and pain/friction-free lovemaking experience.