Mistress spreads the speculum some more, telling you this is only the beginning. Are you feeling that burning ring of fire? Relax . . . it will soon pass.
Your commands:
Anal speculum: crank it open some more.
Anal probe: insert to the next largest section.
Dildo/butt plug: insert the next largest size.
Finger: it's time for three
Except for those with an anal speculum, gently massage your asshole, rotating your device or fingers and prepare yourself for the last and largest tool you have.