Your flatmate's favourite way to keep fit, while staying indoors for the past few months, has been yoga. But this hasn't been easy on you. She keeps walking around the flat wearing her tight lycra outfits, showing off all her curves. Every time you catch her bending over and stretching, you feel your cock harden and you have to leave the room. Sometimes it's almost as if she wants you to watch, especially when she wears that red sports bra that her big, natural breasts always fall out of when she bends forward. You can barely take it anymore, so today when she rolls her mat out you crouch behind the door so you can watch and stroke yourself. Every time she turns round you feel your stomach clench, worried that she will spot you spying on her. But she doesn't seem to notice, so you keep watching while she gyrates her hips, sticks her fat ass in the air, and spills out of her bra.