(That was the sound of my yell as my brain exploded
)
Finally got DS to stop screaming with wind and fall asleep... so DD decides that jumping loudly round the lounge, and then (when I told her to stop because I wanted him to sleep for 5 mins) goes and get her hideously noisy ride along car thingy to beep next to his head 
The majority of the time I'm of the opinion that DS will learn to sleep through it, but today the screaming has reduced me to tears and I need him quiet for a few mins.
The joys of learning to be a mummy of two....