XKCD's base system

i thought the binary in this comic might be ascii:
0110 0010 0110 0001
0111 0011 0110 0101
0010 0000 0011 0010

(all the leading zero's, '0110 0101' is a whitespace...)
so converted to hex:
6 2 6 1, 7 3 6 5, 2 0 3 2

then ascii:
"base 2?"

yes. yes it is.