Ianto has made the mistake of raising his glass to take another sip of his drink, and it's all he can do not to spit it out at the other man in response to John's Back Alley Screw and his suggestion that they might use them to unclench. As it is, he inhales a bit of the drink instead and needs to take a few moments to catch his breath before he can speak again. To unclench, honestly.

"Well... I imagine that it would certainly help," he hazards. "Of course, an issue you might have is convincing those people into trying one." He raises an eyebrow. "I'm going to hazard that anyone who truly might benefit from--" no he's sorry, he can't say it out loud now, "such things is unfortunately not the sort of person to appreciate one."