Technically the biggest deficit in Canadian History was Trudeau Père's last at 8.1% of GDP BTW, second biggest was.....TP's last but one at 7.7%, third largest was..... TP's last but 2 @ 7.5%

http://www.fin.gc.ca/frt-trf/2015/frt-trf-1501-eng.asp#tbl2

ALL the debt Harper and Mulroney added were the interest on TP's debt.

As you say, live in the real world, you are older and should know wiser.