[u2077]

Just as a side note, I thought /s meant serious. I think I’ve might’ve have seen it used in both contexts.

[bee_rider]

I've never seen that interpretation, but I have to say -- as someone who is not a fan of the /s, I find the fact that it could be interpreted as the exact opposite of the standard meaning pretty funny. In fact I think I will start using it this way, to sow discord among the /s fans. /s

[c1ccccc1]

As the "end of sarcasm" marker, it means both:

"{sarcasm here} /s {seriousness here}"

[ineedasername]

We need an emotional tone markup language. ETML.