100 bucks will take you this far:

1 shwermas = 6 bucks
1 big bottle pepsi = 5 bucks
baskin robbin ice cream = 8 bucks
nice movie in cinema = 35 bucks
KFC snack box = 10 bucks
1 beer = 35 bucks
TOTAL = 99 bucks

1 riyal you can buy yourself a cup of tea :P