I smell a rebound prank.
- OP turns in his letter.
- Boss calmly accepts resignation.
- No lulz were had, everyone in on the prank is disappointed.
- OP reveals it was a prank.
- Boss ignores OP.
- Suddenly the owner and VPs have total amnesia about any "prank".
- OP escorted from building, protesting that it was a joke.
- OP told in parking lot "April Fools!"
This would actually provide 100% more lulz than OP's original intent.