Putting aside the fact that Les doesn’t seem to know what “taking the fifth means” means (it’s not as if he ever knew any lawyers, after all), isn’t whether or not Funky and Holly were there something Funky would already know?
(assuming Funky’s still on the wagon)
And I’m assuming “I wasn’t drinking” is a direct response to “taking the fifth,” referring to “a fifth of scotch” or somesuch. Which, see, Summer wasn’t drinking.
Personally — and let me know if I’m alone here — whether Funky and Holly would be chaperoning the party is something I’d be asking about before allowing my 16-year-old to attend.