Based on the context and the answer, generate a question. 

Context: 8/11/08 Deer in the creek . 7:27 pm I forgot to make a note last week . On the way home , just before the College Park [ scratched out ] I meant Greenbelt Metro Station , I saw deer in the creek .

Answer:

They did nt have a pen or paper at the time .



What may be the reason they forgot to make a note ?