Well I guess that's one way to prevent bike theft...

Too bad it doesn't prevent reposts

Anyone seeking more info might also check here:

title points age /r/ comnts
Dildo bike B 43 2yrs WTF 4
I'm not sure why you'd lock it up! Who'd steal this bike? B 188 2yrs WTF 39
dildo bike B 944 3yrs WTF 332
Getting back in the saddle... [NSFW] B 1321 8mos WTF 71
My bike never gets stolen B 1364 2yrs funny 380
Best bike anti-theft system ever B 814 1yr funny 45
My brother sent me this saying "hey, I found your bike" 98 1yr funny 8
This design patented by Mr. Garrison... 1282 1yr WTF 72
I guess no one will steal this bike 41 2yrs funny 3
Dildo seat on a bicycle? 2yrs WTF
How to Properly Secure Your Bike (NSFW) 17 2yrs funny 4
NOPE. 362 3yrs WTF 32
Nope. 162 3yrs WTF 15
That cant be comfortable B 67 2yrs WTF 24

Source: karmadecay (B = bigger)

/r/funny Thread Link - i.imgur.com