You had done it now, you were curious and had taken the time stone from its secret place and was playing with it when you took yourself back to 1978 by accident. You had landed in the middle of a fight and was caught in the middle of a young Severus Snape fighting with James Potter and the Marauders. Your confused as they are seeing you there and James smirks thinking your Severus's friend.

"Well, Well. Looks like Snivelus has a friend to come and help him! How pathetic!"