Thank you Dogboy! Good guess - this guy is really such a jerk It's Randal from Kevin Smith movies "Clerks", "Jay and Silent Bob Strike Back". And this was a part of the dialogue from "The Flying Car". Here you can download the video: http://www.viewaskew.com/tv/leno/flyingcar.html. It's pretty funny. And here you can see the whole transcript: http://www.viewaskew.com/newboard/messages364/1226.html.

By the way, I always thought that the first name of JFK is John...