"Ok, Amy," said Alice, softly. "But... don't get too horny like Jan did, OK?" She minced over to Amy's chair, knockers bobbling, milk rivulets trickling from her teats.
Amy's hand reached up and guided one big teat towards her mouth-pussy. And slowly slid it in. "Eew, it's so wet!" said Alice. Soon Amy was both sucking (somehow) with her pussy, and bobbing her head back and forth, seemingly getting off on the big teat while emptying it. Her chin and tits were absolutely drenched from slopping milk and drooling pussy juice. And she wasn't even done with one tit. And she was moaning a low, hungry moan of pleasure.
Alice yanked her nipple out of Amy. "Ok, do the other one. And don't get so horny."
"I'll... I'll try," came Amy's sodden voice. "I'm just so randy right now. It's really difficu-" She gave up mid-word and slammed her pussy onto the other nipple, sliding around it instantly. She screwed her eyes shut, trying to fight the lust, but almost as soon as she did that, began bobbing her neck frantically harder and harder and harder until...
An animal moan ripped from her throat as she pulled her mouth away, mouth tremoring with orgasm, the last of this round's milk gushing out of Alice over Amy's nude body. The mermaid just leaned back, basking in her afterglow.
"Did you just come sucking on my titties?" frowned Alice. "Because I said try not to."
"I did try," said Amy in a dazed voice. "It just felt... amazing."