Hot-speriment

Mommy talking "... On the plus side my experiment in lab worked great."  

Matsy: "I did a speriment with colors." 

Mommy: "oh right, you did an experiment in sunshines. "

(Pause...other talking)

Matsy: I'm doing a hot-speriment. 

Mommy: a hot-speriment?

Matsy: nods yes

Mommy: what is it?

Matsy: (rolls around on the bed)

Mommy: that's your experiment?

Matsy: nods yes

Mommy: what are you testing?

Matsy: I'm doing hot-speriment with eyes and mouth and nose and knees and jeans.