I guess he thought you'd turned up your toes.
( I ( ( guess ( he ( thought ( you ( 'd ( ( turned up ) ( your toes ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP guess) (SBAR (S (NP (PRP he)) (VP (VBD thought) (SBAR (S (NP (PRP you)) (VP (VBD 'd) (VP (VBN turned) (PRT (RP up)) (NP (PRP$ your) (NNS toes)))))))))) (. .)))
I am assuming that he guessed about your situation. 
( I ( ( am ( assuming ( that ( he ( guessed ( about ( your situation ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP am) (VP (VBG assuming) (SBAR (IN that) (S (NP (PRP he)) (VP (VBD guessed) (PP (IN about) (NP (PRP$ your) (NN situation)))))))) (. .)))