heavy date
From Longman Dictionary of Contemporary Englishheavy dateheavy dateAmerican EnglishRELATIONSHIP a very important date (=an occasion when you meet someone you like in a romantic way) with a boyfriend or girlfriend – usually used humorously → heavyExamples from the Corpusheavy date• They mentioned that you and Anna walked a hundred miles and that you were following it up with a heavy date.