I love the whole concept of Ugly Christmas Sweaters. I feel like I've earned the right to wear them ironically, proudly celebrating their tackiness - because as someone who worked in an office and dressed "business casual" during the 90s, I actually wore holiday-themed sweaters the first time around and thought I looked completely adorable. Yep. The 90s were a crazy time. Kick back some Friday night with a little Nick at Night and watch a Full …