I always thought big clouds on take off were piston rings or a bore that had had enough.
Valve guide seals were little wisps of oil on take off, but much more commonly after being started and most noticeable when starting from cold.
Or in my case accidentally overfilling the engine on my Escort by about 1.5L on my first ever oil change. Never realised the dipstick was getting stuck and not showing the right level.
The cloud of smoke I left at the Millers Road freeway exit was beyond epic. I couldn't see anything behind me as I took off. My workmate who was behind me was nearly 10 mins late for work. He was stuck at the intersection until the smoke cleared. Everyone stood still until the smoke cleared when they could finally see where they were going.