Megan Thee Stallion’s mother was the source of her rap talents. The Grammy-winning ‘Body’ performer, 29, paid tribute to her fellow singer mum Holly Thomas by saying she sharpened her skills by getting them involved in rap battles with each other. She told Shannon Sharpe’s ‘Club Shay Shay’ podcast: “Me and my mama used to be going back and forth. She was really the one, and I just wanted to beat her, and I wanted to impress her and I thought she was just the coldest rapper ever.” Megan’s mum used to go by the stage name Holly-Wood before her death from brain cancer in March 2019. She added: “M…