third level
Third level is also used frequently as a noun, such as in this pensive statement:
"ah, Donny...what a third level!"
third level
An adjective used to discribe ones behavior. Depending on the context can be really good or really bad, but always denotes an extreeme.
My idiot friend was being such a third level, telling everyone how i spilt an entire pint of Guinness on myself!