Question about random variables and tables?

Here is an example script of me trying to make a simple cointoss:

local AllTeams = {"Red Team", "Blue Team", "Orange Team", "Purple Team", "White Team"}

local randomteam1 = AllTeams[math.random(#AllTeams)]
local randomteam2 = AllTeams[math.random(#AllTeams)]

--This is what i wanted to do but you cant do this--
local CoinToss = {randomteam1, randomteam2} 

local CoinTossWinner = CoinToss[math.random(#CoinToss)]

--How can I do this??

What this does is picks 2 random teams out of the "All Teams" table and what i wanted it to do after that, was I wanted it to pick a random variable so it could be like a coin toss, sadly i dont know how to do this

Any feedback is helpful, thanks.