BMW's highest model of a car, series 7. There was also BMW's series 8 but they stopped producing it.
Just listen to rap songs. every song has at least one 745 in it.
by paul October 05, 2003
When a hacked DirecTV access card ID (bin) is blacklisted. Means it's time to get a new bin or 3M. Also 744.
I was trying to watch some pr0n and suddenly a 745! Fucking sucks man!
by QuakeGod January 21, 2004