Some variant that ran on IBM mainframes under CMS initially, later AppleSoft BASIC on the Apple II.
I used to wander into Radio Shacks as a kid and enter obnoxious infinite loops on all the TRS-80s to annoy the salespeople.
So you can recover from it.
My progression was BASIC, Pascal, HyperCard/HyperTalk (I was SUCH a stackhead for a couple years), FORTRAN77, C, C++ Smalltalk, Java, ObjectiveC, and lately JavaScript.