Chelsea is challenged to keep her fingers interlocked behind her head while being tickled all over her upper body. At first it doesn't seem too tough, and the light tickling on her belly and arms get some laughs. When the tickling gets a little more intense she starts to lose focus. Chelsea's armpits are probably her worst spot, and tickling there causes her to drop her arms a couple times. We also find out that her back and neck are both pretty ticklish. I make her beg for more armpit tickling before finally giving her a break.