strangest in what sense? The most esoteric one I have ever used to build something useful was LOLCODE. You can execute the below source here :)
HAI 1.2
OBTW
This is a sample program (FizzBuzz)
It is written in LOLCODE
TLDR
VISIBLE "HAI WORLD! TIS IS FIZZBUZZ!!1!"
BTW Print FIZZBUZZ numbers from 1 to Fizz Buzz
I HAS A MAX_NUMBER ITZ 15
I HAS A COUNTER ITZ 1
IM IN YR COUNTING_LOOP UPPIN YR COUNTER TIL DIFFRINT COUNTER AN SMALLR OF COUNTER AN MAX_NUMBER
DIFFRINT 0 AN MOD OF COUNTER AN 3, O RLY?
YA RLY, DIFFRINT 0 AN MOD OF COUNTER AN 5, O RLY?
YA RLY, VISIBLE COUNTER
NO WAI, VISIBLE "BUZZ"
OIC
NO WAI, BOTH SAEM 0 AN MOD OF COUNTER AN 5, O RLY?
YA RLY, VISIBLE "FIZZ BUZZ"
NO WAI, VISIBLE "FIZZ"
OIC
OIC
IM OUTTA YR COUNTING_LOOP
KTHXBYE