A major gag in the Yenny series deals with tickling. Most characters in the strips have been tickled on numerous occassions. Since a major characteristic of Yenny is her extremely sensitive skin, she has obviously been tickled the most out of any character in the series.
Throughout the years tickling has become a popular longtime running gag.
She is so ticklish that simply walking through a grassy field, or a single hair falling in her navel will drive her crazy.
Yenny has a form of Ailurophobia, or a fear of cats. This is mostly due to encounters with Margot's cat Denisa, and her tickly fur, which has been in contact with Yenny's sensitive skin on some occasions as seen in the strips below.
Yenny seriously hates to be tickled on any account, and will try to avoid it at all costs. However there was one instance where she actually enjoyed it. During a (somewhat forced) movie date with goth fashion model Giancarlo, he kneaded an area just above Yenny's knee, visually driving her crazy, but after the date she expressed how she actually liked it to herself. This is the only moment in the series where Yenny has confessed a liking for being tickled.
Characters that have tickled Yenny the most in the series...
Most of Yenny's family members have ticklish birthmarks on various parts of their bodies. These marks are extremely sensitive areas representing where the individual's "most ticklish spot" is. Yenny most well known birthmark is on the sole of left foot right underneath her big toe. Touching this peculiar brown mark on any Yenny family member will drive them crazy with ticklish laughter. Some family members have more than one ticklish birthmark with Yenny being one of the few to have two.
Another interesting fact about the birthmarks is that they are so sensitive they can actually detect approaching tropical storms. This works by the mark becoming really cold. Apparently this is a family trait since Yunny revealed she was also able to detect tropical storms through the birthmark on her inner thigh.
For more information see the ticklish birthmark page.
Various strips showing the frequency and hilarity that comes from Yenny being tickled.
Despite having extremely senstive skin all over her body, she has mostly been tickled on her large feet. This has been a long time running gag since the beginning of the series.
In another spin-off adventure... Yenny's feet are so sensitive, she can feel the fingerprints on any object and also tell the last time the object was touched by feeling the warmth of it...
Tickling has long been established to be a common fanservice since a large portion of Yenny's fanbase consists of people who appreciate the activity of tickling, whether intimate or for friendly fun... This interest also goes hand in hand with the large interest in Yenny's feet.