It means that you take things on lightly. You don't often hold grudges. You are easily likeable.
(Friend rants and then apologizes for ranting infront of you)

You are such a soft shell! You need to rant MORE.
by azlinkix March 16, 2011
Get a Soft Shell mug for your mom Rihanna.
when a guy poops and cums between a girls boobs and then squeezes the boobs together.
after hours of rough sex, tom ended the night with a soft shelled taco on bettys chest.
by vincent poop April 28, 2006
Get a soft shelled taco mug for your sister-in-law Julia.
When a girl has a yeast infection and you take two slices of bread. put it over her vag and take a bite of the yeast infection. mmmmmmmmhmmm tasty good
by Masta Piz April 19, 2009
Get the Soft Shelled Crab Sandwich neck gaiter and mug.
NASTY oral sex involving 3 people one woman and two others where one person hocks a loogey into the girl's pussy and the other person sucks it out and kisses it into the woman's mouth.
The most trifflin ass shit I've ever heard of.
those three dykes are so fucking raw ass nasty they are into soft shell crab action.
by pinkussbunion July 13, 2006
Get a Soft Shell Crab Action mug for your fish Paul.