In TOW, The Worst Best Man Ever, at 15:30 the scene shows Chandler, Joey and Ross confronting the stripper in Chandlers office about stealing Ross' wedding ring. After Ross' line 'Where's my dead grandmothers wedding ring?', Chandlers line, 'Way to be cool, man' is spoken. You can see Joey lean behind Ross and cover his mouth to laugh. The camera changes angles and Joey is composed and back in character. I thought it was hilarious!