Beamed directly into your brain by: Drachefly
The author writes:
You may think that the dialogue on this is unusually stilted, even for a sex scene. There is a good reason.
So, I set about writing valid images using only comprehensible text. Having mostly succeeded in that (I gave myself a bye on the headers, which aren't comprehensible), I set about producing an image which contains the text that is required to encode it. I quickly realised that won't work for obvious reasons.
But then I did produce this: if you consider the dialogue in this strip as being in base 58 (a-zA-Z ,.!) and prepend an appropriate gif header (an exercise left to the reader), you get the artwork for the strip, though without the (manually-placed) speech bubbles.
I figure that should be enough to keep the kids from seeing the hardcore version. Well, they probably aren't reading the annotations anyway.
Update: Okay, after like half my fanbase actually did the above and complained it didn't yield a hardcore image and the other half didn't and complained that it would... okay, it isn't hardcore. It doesn't look like people at all, behind the speech bubbles! So you can stop trying to see those naughty bits.
Update: Inspired and somewhat scary forum-goer SPON23 has determined that if one replaces the line 'A li... no' with... oh, just see the forum post.