An affliction whereby one is not sexually gratified during sexual activity without some form of digital (finger) stimulation of the rectum.
Rachel’s rectal digititus requires me to always shove my finger in her ass. I don’t mind.

I have to warn you, I have rectal digititus and will require insertion to at least the second knuckle to get off.
by Eaton Holgoode June 6, 2018
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