When a BAMF is playing a multi-player first-person shooter game online like Battlefield or Call of Duty, and he/she goes on a long killing spree (i.e. gets a total of 20 or more kills) before dying.
A phrase an online gamer might use to intimidate and/or express his/her total domination of the opposing team when total kills exceed 20 or more without dying: "Yeah Noobs, that's right - you've been Funderthucked!"
by funderthuck October 03, 2018