At least they're getting stoned first, I rationalized.
( ( ( At least ) ( they ( 're ( ( getting stoned ) first ) ) ) ) ( , ( I ( rationalized . ) ) ) )
(ROOT (S (S (ADVP (IN At) (JJS least)) (NP (PRP they)) (VP (VBP 're) (VP (VBG getting) (S (ADJP (VBN stoned))) (ADVP (RB first))))) (, ,) (NP (PRP I)) (VP (VBD rationalized)) (. .)))
I think it's better that they get stoned first, before they're around the kids. 
( I ( ( think ( it ( ( 's better ) ( that ( they ( ( ( ( get stoned ) first ) , ) ( before ( they ( 're ( around ( the kids ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP think) (SBAR (S (NP (PRP it)) (VP (VBZ 's) (ADJP (JJR better)) (SBAR (IN that) (S (NP (PRP they)) (VP (VBP get) (NP (NNS stoned)) (ADVP (RB first)) (, ,) (SBAR (IN before) (S (NP (PRP they)) (VP (VBP 're) (PP (IN around) (NP (DT the) (NNS kids))))))))))))) (. .)))