I like watching Vesper's full-body actions when I tickle her feet, because you can see what's going through her mind, just by how crazy she gets–her hands flap, her fingers wiggles, she pounds the bed and waves all around! She knows her feet are locked in so she can't go anywhere, so the result is all of her reactions come out via the rest of her body! And it's ALWAYS fun tickling her plush, sensitive feet!