Python code:

import sys, re

DEBUG = False

data = None

if len(sys.argv) > 2:
	data = sys.argv[1:]
elif len(sys.argv) > 1:
	f = open(sys.argv[1])
	data = f.read().split()
else:
	print 'usage: shaggarscript.py [tokens | file]'
	exit()

register = 0
stack = []

def pop():
	if DEBUG: sys.stderr.write('pop\n')
	global register
	register = stack.pop()

def push():
	if DEBUG: sys.stderr.write('push\n')
	global register
	stack.append(register)

def inc():
	if DEBUG: sys.stderr.write('inc\n')
	global register
	register += 1

def dec():
	if DEBUG: sys.stderr.write('dec\n')
	global register
	register -= 1

def add():
	if DEBUG: sys.stderr.write('add\n')
	global register
	register += stack[-1]

def sub():
	if DEBUG: sys.stderr.write('sub\n')
	global register
	register -= stack[-1]

def out():
	if DEBUG: sys.stderr.write('out\n')
	sys.stdout.write(chr(register))

instruction_map = {
	'python': pop,
	'java': push,
	'good': inc,
	'bad': dec,
	'lol': add,
	'idiot': sub,
	'language': out
}

for token in data:
	token = re.sub(r'\W+', '', token)
	if DEBUG: sys.stderr.write('%s %s %s\n' % (stack, register, token))
	if instruction_map.has_key(token):
		instruction_map[token]()
		if DEBUG: sys.stderr.write('=> %s %s\n' % (stack, register))
	else:
		if DEBUG: sys.stderr.write('nop\n')
	if DEBUG: sys.stderr.write('---\n')