Brother-Sister Incest/Web Comics

• Averted in Dan and Mab's Furry Adventures: Dan seems to find thinking about his half-sister in a sexual way as squicktastic as the average troper.
• Better Days and Badly Drawn Kitties, which had a shared cast of characters, including twins Fisk and Lucy Black. The two comics used the sibling's special relationship in completely different ways. Better Days used the relationship dramatically, while BDK used it as a Crosses the Line Twice Running Gag.
  • Although as Better Days progressed both characters seem to deny it happened, it slowly became a forgotten dropped storyline, and both moved on to their respective Relationship Sue
• In the Massive Multiplayer Crossover fan web comic Grim Tales from Down Below by Bleedman, Minimandy/Minnie seems to love her brother, Grim Junior, in a manner beyond what would be acceptable sibling behavior.

Her heretofore ambiguous feelings, once made explicit, are also cranked up to Axe Crazy levels as indicated by this late strip. Although, she is Not Herself there. Afterwards she doesn't seem to have given up hope and his response seems ambiguous.

• It's the reason Polkster wants an older sister. TOTALLY NSFW.
• This Loserz strip
• Powerpuff Girls Doujinshi takes the mild vibe between Dexter and Dee Dee mentioned below and runs with it.
• Concession has Rick and Kate (who are also a womanizing drug dealer and a pedophile respectively), plus Joel and his dead sister Miranda, possibly, she died as a young child but is really close to her brother as a ghost
• NSFW Comix has Cuthwald and his sister. Averted at first, but played straight after he was rescued from being cremated at his funeral.
• In Fey Winds, two members of Sigurd's Minionz, Hansel and Gretel, apply.

Sidney: Are you two married or brother and sister!?
Hansel and Gretel: Yes!

• In Juvenile Diversion, the reveal that Julie is Jason's half-sister freaks him out, due to his feelings for her (and the fact that she slept with him).
• Absolute Hot Sister is built on this trope. Ellen has gone so far as to suggest to her brother Kevin that they sleep in the same bed and take showers together.
• This Studs Up comic has two people discussing this trope as an analogy to being a Spurs fan. They almost got to the logical conclusion before Squick sets in.