...way again, but this time to deliver a flat look. Phineas grinned and gave a sheepish, apologetic chuckle, and Ferb resumed his previous position.
Recognizing the cue this time, Phineas carefully used his hand to aim himself before pushing himself forward with a strained grunt at the resistance. It was more difficult than expected, but it stoked his gut fire something amazing.
A sharp intake of breath from Ferb, and a slight wriggling as, inch by inch, Phineas worked his way into him.
As he was enveloped fully, the fire in Phineas spilled over and ran wild throughout his body. He let out a wavering cross between a whimper and a moan.
"Uhh!" he exclaimed, "I-it's so…warm, a-and tight! Oh, Ferb!" He panted heavily. Ferb lay there, adjusting, a sweat on his brow forming from his brother's hot words. He constricted and expanded alternately around Phineas, the expression on his face slowly losing all traces of pain.
When he felt loose enough, the hand he had around himself increased its pace, and he began to rock himself so that he slid up and down slightly on the table, creating friction.
Phineas' eyes became wide again as a trembling 'Ahh!' escaped him. On instinct he began to move with Ferb, hunching and moaning more as the friction increased to the point where he was starting to actually slide i...