Is BBCode Turing-Complete?

I'd like to implement a small random-number generator in BBCode, but I'd like to know if this is even possible before starting. Is BBCode Turing-Complete, and if not, are there any text markup languages that are Turing-Complete?

>>15
http://dis.4chan.org/prog/localsettings.txt
>boardname=Programming
metadesc=/prog/ is 4chan's BBS for computer programming.
metakey=bbs,computers,software,programming,php,perl,html,sql,python,ruby
No, PHP,Perl,HTML,SQL,Python,and Ruby are the official languages of /prog/!