We’ve highlighted the oddball tendencies of WTOP’s weekend web reporting in the past. But if you aren’t reading this stuff over the weekend, you’re missing out on a veritable goldmine of obscure and odd “news” — some culled from the AP wire, others reported on in house, most of it good for a laugh. For example: did you know that the Maryland State Fair in Timonium is debuting a free arm wrestling competition this weekend?…