"sodomy doesn't happen between lesbians."
Because lesbians don't have penises?
One doesn't need a penis to sodomize a woman. Many lesbian couples mimic heterosexual copulation using a prosthetic penis, commonly known as a "strap on". For more examples, try googling "sodomized with", although I hope that isn't necessary.
Unfortuantely, You may be right. Yuck