Apple ( AAPL) is sandbagging, Jim Cramer said Thursday on CNBC's "Stop Trading!" segment. Cramer said that, given the computer giant's red-hot earnings report late Wednesday, the company's below-consensus guidance is downright "insulting." He said Apple's obvious effort to talk down expectations shows once more that "press releases, unlike hips, do lie." Other than Apple, down $5 at $90, Cramer would generally shun tech, saying the season for buying technology stocks starts in August and runs through early January, with the annual Goldman Sachs technology conference. Cramer wouldn't buy PPG ( PPG), down 2% at $66.50, saying the U.S. economy is "not that strong" and the Pittsburgh-based industrial giant is "not out of the woods."