Female genitalia that has been moist/sweaty/unclean for a long period of time, promoting unfavorable aromas.
In reference to the WWI term "trenchfoot" where soldiers who did not change their damp footwear developed rotting flesh on their feet.
She had a bad case of trenchpuss...
The act of a person with special needs participating in leisure activities while feeling an immense amount of joy for life and the moment they are in. ie: dancing like no one is watching at a Christmas party.
Look at Kenny tearing up the dance floor, He's free-tarding hard, he thinks hes amazing.
Look at Sam out there surfing with that big smile, he's really free-tarding on that wave.