Strangest languages you know

I know quite some GolfScript, a stack-based programming language that solves problems in as few strokes as possible, and ZZT-OOP (remember ZZT games?) is probably also up there. I also like to pretend I know APL but in fact I'm terrible at it.

What are the most obscure, strange, or useless programming languages you know, /prog/? Bonus points if they're not actually esoteric (Brainfuck, Befunge, etc.)

Scheme

FIOC

Java

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The ABC Programming Language

C++
Bonus points if they're not actually esoteric
Never mind, then.

Haskell

Prolog

SAS

>>6
Lol. Memories. You should necropost and bring it to the top! Educate the new land of /prog/.

Actually, that's a not great idea.

Starcraft triggers.

>>11
I think that you should educate yourself about the word order in common sentences.

Kanren, so basically >>9

whitespace

CAPS LOCK IS CRUISE CONTROL FOR COBOL.

>>13
You are a fool.

A fool are you.

Your faggotry is infectious and ultimately destructive.

Ultimately destructive and infectious, your faggotry is.

Is your faggotry infectious and ultimately destructive?

Yes.

HAND

>>17
I think he meant that you should educate yourself about the common word order in (English) sentences.

>>18
EDUCATE MY ANUS???

>>18
That's a great idea PAUSE NOT!

>>20
That idea is NOT GREAT

>>21
That idea is GREAT                     NOT