From the Jain Dharma point of view, it is not recommended.

• For monks and nuns: complete celibacy (brahmacharya) is mandatory; all sexual activity is prohibited.
• For lay followers: the Brahmacharya Anuvrat allows sex only with one’s spouse, with restraint and purity. Jain acharyas clearly discourage “vikrita maithuna” (perverted/unnatural acts that intensify passions), which includes oral/anal sex and practices done mainly to excite sensuality. Such acts increase kashāyas (passions), disturb equanimity, and go against the spirit of ahimsa and self‑control. Therefore, a “69” position should be avoided.

If you are striving to live by Jain vows, practice fidelity, moderation, and periods of self‑restraint, and avoid any act that inflames passions or causes harm.

• On Brahmacharya and the 12 vows for laypeople:
• Swadara‑santosh (contentment with one’s own spouse) and Maithun‑Viramana (restraint from sex):
• On kashāyas and why restraint matters: