What's a Prrfler?

Someone, usually a feline, who prrfs or prrfles regularly. Like Bren and Brenna here. ^^;

And before you ask, Prrf (and its cousin, Prrfle) is a sound based off of the sounds that an actual cat makes. If you've been around cats, I'm referring to the sudden 'purr?' noise, particularly when they're startled. At least, that's how the prrfling first started. Over the years, it's been basically developed into something more....robust. Almost like the f-word (the prrf-word?). In fact, that's probably the BEST way to regard prrf/prrfle, if not as vulgar. =>.>=;;

I actually had no idea about that.
Thanks.