Well good! That was precisely what Jack wanted. He wanted Andrew to go crazy from it, and wanted to see and feel him come apart under him. Wanted Andy undone under his hands and under his lips and everything else.
His tongue guided Andrew's cock into his mouth, bit by bit. At the words, those warning words, he only sucked harder, his cheeks hollowing out around the erection in his mouth. His head bobbing between Andrew's legs - intent on what he was doing.