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1.
The area inbetween a man's thighs and his scrotum. Sometimes, this area obtains a rash in which the area turns red and causes pain on the man when he walks. This rash can be referred to as a thals rash.
I had trouble walking around the city all day due to my swollen thals rash.
by Boris Jacobs June 23, 2006
 
2.
Someone who has not obtained local status in the skateboarding and/or surfing community. Subject may be denied session with the locals at local or private skate spots
No thals, locals only
by dootesc January 16, 2011