Arrggh, I need sleep!

Having twins is twice as nice but it's cam also be twice as challenging.  My girls are 2 1/2 now and are certainly behaving like it.  Honestly, the heinous term "terrible-twos" may've earned it's name honestly.  Over the past month they've not only taken their tantrums up a notch but they've also decided that sleeping is option and that nap-time is unnecessary (yes, I'm sure the lack of sleep is causing the tantrums and vice versa).  My eldest daughter went through this phase just as the twins were born and I was so hopeful that it was a result of having 2 new babies in the house at that time and that it would not be something to ever be endured again. Wrong!  Ok, I'll stop whining now, but honestly I'm so dogged tired with getting up at 4am and being on constant "mom"  patrol for 16 hours a day that I may just throw myself on the floor and start kicking in screaming too!