He tries the milk.

Naruto walked up to Tsunade and brought her lips up to his in a kiss as he fondled one of her boobs. She cooed into the kiss as her tail flicked, and then Naruto broke the kiss, before going down, cupping the tit and bringing his face down to it, opening his mouth to take the test in, and began to suck.

"Mooooo..." Tsunade cooed as the milk started to flow, causing a warm surge of pleasure to shoot through her being. She placed a hand on the back of Naruto's head as he drank from her.

Shizune, now naked, sidled over curiously, and took Tsunade's other teat into her mouth. Her expression widened, and she immediately began to suck up more of the cream, making Tsunade moo and moan some more.

Naruto then pulled off the tit, and moved up, kissing Tsunade again. "Mmmph!" she moaned as the milk he had been holding in his mouth flowed into hers. She panted after he broke the kiss, savoring the taste of her own milk, and said, "That tastes good..."

"Heh, yeah, it's no ramen though..." Naruto chuckled.

"Nor is it your cum... Speaking of which..." she grinned, cupping the boob that Shizune wasn't still latched to, and jiggled it for him.

"Maybe when she's done," Naruto quipped, pointing to Shizune.

"...greedy girl," Tsunade smirked.

"...you do pay her enough to be your assistant, right?" Naruto raised an eyebrow, seeing as Tsunade was kinda high maintenance as a Hokage.

"...point taken."