The blob strikes!

Jane lived only a few minutes from the lab, so the drive home was quick. The blob waited patiently, wrapped around her hips, waiting for the perfect moment to strike. She arrived at her house, and walked in to see her roommate Liz watching tv in the living room in nothing but a t-shirt and panties. She walked over and joined her on the couch. They had been chatting for a bit when the slime decided to make it's move.

"So apparently, some sort of experimental slime had escaped and...oh!" Jane gasped, her thought interrupted as her panties seemed to wedge themselves into her. "What the hell?" She began to reach down to her skirt when her panties began to grope her ass. Immediately after, she felt some slick tongue like appendage begin to lick her pussy. "Unh!" she gasped spreading her knees and grabbing the couch. She was shocked at how good it felt. "You OK?" Liz asked worried.

"Panties...alive..."she uttered between breaths. Liz looked down at her hips, then yanked her skirt back to look. Sure enough, her black panties seemed to be moving against her. "Holy shit" Liz whispered, sitting back. Jane began to rock her hips against the slime, the ministrations increasing their pace. She began to moan, quietly, then louder and louder until with a satisfied "Guuunh!" she came into the panties.