Disturbing/unarming kiss:
It's cute when it's your wife. It's creepy when it's a complete stranger.
While I'm sure this could be effective in battle under the right circumstances, I'm pretty confident that Larian will avoid any combat mechanics that would be construed as sexual assault.
You can probably expect weaponised sexuality to be limited exclusively to non-contact flirting. Maybe with a little bit of date-rape (magic potions/spells).
If you're really, really lucky, the next time we get to vote for an extra class, Larian will include the option for a battle stripper. (The perfect class for a lizardman.)