How do lesbians have sex?

The ways in which lesbians have sex is quite varied.  Although there is obviously no penis involved within lesbian sexual intercourse, there are plenty of products available to purchase that replicate the penis.

Having said that, not all lesbians like to be penetrated.  Here's a brief guide to common elements of lesbian sex.

Oral sex

As with heterosexual intercourse, many lesbians enjoy oral sex.  Women will often take it in turns to give and receive oral sex.  Prior to reaching this point, however, there will usually be plenty of foreplay, including kissing and caressing.

Penetration

Many lesbians enjoy penetration - they simply don't enjoy it with a man.  For this reason, there are plenty of products available such as strap on penis replicas that allow lesbians to enjoy penetration. 

Unlike heterosexual intercourse, there is no risk of things...ending prematurely, so lesbians may be able to have penetrative intercourse for much longer.  Obviously this also depends on whether the receiving female becomes too sore throughout the process.

Of course, with the use of strap on penis replicas, all of the positions available to heterosexual partners are also available to lesbian partners.  There are also double ended phallic toys that lesbians may decide to make use of.

Ultimately, the ways in which lesbians have sex is as endless as the ways in which heterosexual partners have sex.  The only real difference is that there is no actual penis involved.

The same way as the opposite sex do.