This joke which Hilde sent has nothing to do with anything in particular, but it does give a hint of what it's like to be a mother and PhD student:
On One Condition
A woman was sitting at a bar enjoying an after-work cocktail with her girlfriends when an exceptionally tall, handsome, extremely sexy young man entered. He was so striking that the woman could not take her eyes away from him.
The young man noticed her overly-attentive stare and walked directly toward her. Before she could offer her apologies for being so rude, the young man said to her, "I'll do anything, absolutely anything, that you want me to do, no matter how kinky, for $20, on one condition."
Flabbergasted, the woman asked, "What is the condition?"
The young man replied, "You have to tell me what you want me to do in just three words."
The woman considered his proposition for a moment, reached into her purse and slowly counted out four $5 bills, which she pressed into the young man's hand along with her address. She looked deeply into his eyes, and slowly, meaningfully said...
"Clean my house."