Probably more than you wanted to know, but

They are actual lamb skins...

They're use is strictly as a birth control means...they offer no protection against STDs whatsoever...they are primarily used as an alternative to latex for people with allergies...

I visited a hostess who let me bring some lambskins to try out (NOT for FS).  I got concerned when she used a pastry brush to dab herbal butter all over by balls that she said looked like roasted baby potatoes. Then she covered my meat with mint jelly which I thought meant she was ready to enjoy the meal. But then she pulled out a large carving knife and I asked if it would be OK to switch to latex.  

Lamb Chop, Shari, and Charlie Horse

Lambskin condoms are NOT for use in the hobby.

"Mary had a little lambskin. The piece was white as snow. Everywhere that Mary went, the lambskin was sure to go." Who knew she was a little ho?