A paranoid friend has sent me a message, but in his paranoid mind he forgot to tell me how to decode it.
If Picasso got a computer he would know what to do!
What can I do now?

S37x13a10x10d20x10l28x16y37x11,31x14 21x16t20x14h10x13i35x12s42x14 12x15i31x12s25x12 40x12n40x14o15x10t25x16 34x11t25x13h40x15e31x13 36x13m17x15e22x16s21x10s22x10a42x16g27x15e43x10 20x15y15x13o15x12u35x11 20x13a11x13r40x10e43x13 34x12l27x11o40x16o12x11k10x12i37x12n25x11g10x11 37x16f31x16o36x15r17x11 40x11:26x12(17x10 12x16T15x11r37x14y37x15 31x10f28x10u34x13r20x12t34x16h17x14e41x10r25x10!10x15o12x12o12x14o15x15o15x14o35x13o26x13o42x13o15x16o34x10o16x10o37x10o43x15o34x14o26x14o10x14o41x16o43x14o12x13o17x13o17x16o31x15o12x10o36x14o31x11o10x16o16x13o34x15o20x16o40x13o25x15o42x10o20x11o25x14o43x16o17x12