Blood Blister: If you are sure it's a blood blister: thinning of a blood vessel wall could cause ballooning when the pressure goes up, then collapse when the pressure goes back down. The concern is if this blister doesn't resolve and gets cut, getting it to stop bleeding could be difficult.
This is an old British riddle from 1300-1900 AD. What is the longest and yet shortest thing in the world, The swiftest and yet the slowest, the most divisible and the most extended, The least valued and the most regretted, without which nothing can be done, Which devours everything, however small, and yet opens the life and spirit.
Mat_Laser_Hyperion_5_LongestYard. The Longest Yard is a legendary laser manufactured by Hyperion added in Claptastic Voyage. Longest Yard is obtained randomly from any suitable loot source but has an increased chance to drop from Teh Earworm located in Cluster 99002 0V3RL00K.