Definition: In this task, you are given a Reddit post as a text. Your task is to generate a title for this text. The title should start with "TIFU by", followed by a situation that caused humor. The title should contain 7-12 words, ideally.
Input: Text: so this happened about 20 minutes ago, i'm writing this as i walk home. just a little background information i live in a city where there is generally no crime or theft... generally. i was tired of sitting on my ass today so i thought i'd surprise my so by buying her a stuffed animal and picture frame, i figured i could play pokémon go (just started playing again) and i would take my bike. now the closest store is about 3 miles so i set off on my journey. i head in buy the animal and picture frame, however i saw a book store and was just talking to my so about how she's been wanting to read more. i figured i could see what they have in the store and i lock my bike before heading in. come out to see my bike missing which absolutely sucks because i use that bike as my mode of transportation to school, work, friends houses, etc... i head back into the store to ask if the cameras had caught anything. they couldn't find a thing and at this point i was steaming mad cause i lost my transportation and have to walk home. i head out the bookstore and find 3 older guys maybe in their 20s or 30s all on bikes and one on mine! i chase after these guys because it's an expensive ass bike (nearly 400$). this resulted in me getting thrown on the floor and kicked as they speed off with my bike. my picture frame snapped and the stuffed animal fell in dirty water as well as me losing my precious bike :/ now i have to walk home disappointed and tell my mom the terrible news. moral of the story don't leave your house?

TIFU by trying to surprise my SO