there are also lesbians who may or may not like anal sex. in 1987, a non-scientific study (munson) was conducted of more than 100 members of a lesbian social organization in colorado. when asked what techniques they used in their last 10 sexual encounters, 100% reported kissing, sucking on breasts, and manual stimulation of the clitoris; more than 90% reported french kissing, oral sex, and fingers inserted into the vagina; and 80% reported tribadism. lesbians in their 30s were twice as likely as other age groups to engage in anal stimulation (with a finger or dildo). a 2014 study of partnered lesbian women in canada and the u.s. found that 7% engaged in anal stimulation or penetration at least once a week; about 10% did so monthly and 70% did not at all.