bio-illogical clock 

the internal physiological mechanism responsible for causing one to wake up at workday times on the weekend.

also responsible for any low-grade sleep disorders and the inability to stay awake during any meetings held after lunch.

"it's saturday, go back to sleep!"
"i can't, it's my bio-illogical clock on the fritz again."

bio-illogical clock by geek.neo March 5, 2010

bio-illogical clock 

The unreasonable state of mind, typically suffered by females, once a particular age is reached causing overly emotional, unstable and erratic behaviour predominantly concerning the immediate needs of spawning parasitical offspring.

As sure as Summer, the feared bio-illogical clock transformed this fine woman, of such beauty to make the Angels weep, into a terrifying beast of breeding.

bio-illogical clock by Onyx Lioness June 28, 2010