Because sometimes words cannot fully express what emoticons do.

Icka!: *to Gink, sitting on her shoulder* You smell like a cat.
Sean: Better than smelling like a dog.
Icka!: No, dogs smell good.
Obachan: At least until they turn around and stick their butt in your face like cats do.
Icka!: Then they just smell like ass.
Obachan: MMmmmmm... Ass... ^___^
Sean: O_o
Icka!: o_O

Also, think I may have to take up watching Kamen Rider W. Any show that has a giant robot T-rex running around dragging a mini-van behind it like poop on a rope-? Yeah.
Also? Half-Boiled Detectives. Seriously. Why did no one tell me of this crack?