Kylie Jenner and Kris Jenner are Birkin bag besties. Kylie, 28, opened up about her self-proclaimed love language, which is exchanging Hermès Birkin bags with her momager, Kris, 70, during a Thursday, May 14, episode of Jake Shane’s “Therapuss” podcast. “I got my first bag from my mommy I think for my 18th birthday,” Kylie said of her milestone moment. “Most of my new bags now are from my mom. It’s like our love language.” Kylie added that she a…