How to tap while lagging

Song: Direct & Labisch - Make A Move
Just a touch of what's to come in my planned frag movie, this wasn't impressive to me because of the frags as much as it was because I had about 200 ping and the server was freezing (as you will be able to notice by the 2nd frag). Fact it was unlikely was what led to me making this video :) Just goes to show sometimes frags register regardless of the ping. Enjoy