I was thinking that when you have advantage (or disadvantage) and roll 2d20 getting a 20 and a 1, that's a "blackjack" (20 + 1 = 21, the highest score in the card game Blackjack). It wouldn't happen very often, but would be pretty funny when it does.
ncG1vNJzZmivp6x7prrWqKmlnF6kv6h706GpnpmUqHyjuMCcoqOZk6B6r7HWZmyeZZRisW7AxKukoqafobyoxY1sbG5vYWx8