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

Context: But the pattern on this one ai n't half bad , I like that it 's colourful and neon!Got Steve to sign on some shirt I bought for 12 bucks , because he could n't sign with a red marker on my Dim Mak shirt . Now I ' m afraid to wear it because I do n't want the marker ink to wash off and I do n't know if it 's permanent or not . And a video I took of course .

Answer:

The writer sees the signature as a memento .



Why does it matter if the marker washes off ?