Have you practiced any tantra?

There is finally enough men here to start posting and sharing information about tantra.
Im wondering what your level of participation in Tantra has been. Is it mere curiosity or something youve had experience with? At what level? Ancient eastern tantra or neo-tantra?
Ive been studying yoga 20 years and been a practitioner/teacher for 2. Throughout my practicing yoga I learned more and more of both traditional and neo-tantra.
Ive practiced tantric breath work, chakra and kundalini work, Ive given/received tantric massage, practiced lingham massage and several other practices including teaching naked male yoga and meditation.
Whats your experience...?