Rep. Marjorie Taylor Greene celebrated her milestone 50th birthday with a bikini-clad photo, reflecting on her accomplishments both personally and professionally while seeming to offer a cryptic response to an insult that was hurled in her direction just weeks ago. “Many people go into their 50th birthday thinking it’s a bad thing, but I truly feel it’s wonderful and I’m so excited and grateful God let me live 50 years and do so many things,” the congresswoman wrote in her caption on Memorial Day before facing backlash online, RadarOnline.com has learned. Greene rejoiced in being the first per…