it was my first job as an embedded engineer i was hired to write firmware for arm microcontroller that has ble radio. But the microcontroller we used didn't have FLASH it had a SRAM and an otp ( one time programmable) memory. In ble you can make a proximity beacon and When a phone passes by this beacon it will get a notification '<device_name> nearby'
. I thought it is funny if i keep device name 'MILF' (original name of device is FLIP ) so when somebody's phone is in proximity it will have a notification 'MILF nearby'. joke didn't work as nobody has their bluetooth switched on by default ,but i forgot to change it before programming otp memory.

i just buried that device and told everyone it is not working properly