PSA: ADC players, don't just build Lethality as a default.
Lethality gives you flat armor pen.
You hear me?
FLAT armor pen.
If the enemy team has any:
- Tanks
- Juggernauts
- Fighters
you will NOT be able to kill them with a lethality build.
It doesn't matter if you pick up a last whisper item; you don't have the crit, AD, or attack speed you need to kill them.
If you build 
as two of your items, that's fine. Just don't do it EVERY GAME, and sell them if the game goes late.
You need AD, AS, LS, and Crit to kill tanks, and you aren't getting that from these items.
