Answer the question about text:

Page 516 ! Uni readings done for the day too , so should be clear to finish up tonight . Last night I sent a deranged message to R along the lines of " Hahaha sucked in ! Bet he did nt see THAT coming ! "

What is a likely reason that the speaker sent a delusional message to R ?
They were somewhat sleep deprived and as a result their judgement had become compromised