I suppose you might be talking about mine. Mine comes from the days of PC Mag/Extreme Tech. There was a forum member (Sethness) there who made signatures for folks, often free-hand artistic drawrings. What you see is an iteration of that because unfortunately Seth stopped making sigs - or perhaps he just didn't like me. :-P We were limited to the height and weight of the image; this style/size was considered the largest one could go and be within acceptable limits. It isn't graphics intensive and loads quickly even on a dialup connection.
You can not allow or disallow signatures of you want or just allow text signatures. Sounds a bit boring to me, but they aren't my monkees, not my circus. Signatures are fairly common within a forum as are avatars. Apparently you have no problem with pixelated emoticons, something I find a bit odd, but...
...and any upmarket Chinese hooker can introduce you to the many specialties!
Welcome. Forget the tea, it's almost beer o'clock. (beer)
Hola! You can turn signatures off in your "My Controls" area.
He's gone a bit quiet. You must have scared him off. {{{Ken}}}
I actually suspect he's not reappeared due to the lack of biscuit offers.
Every time I see that I think of dog food. That's what we call dog treats over here. Maybe he thought you wanted him to eat pig ears and bark!
I think it is doughnut boy. (info)
No one forced you to eat donut!
You've got the wrong place. We're mostly quail and partridge here.