Some people can strangely get pretty mixed up about 2 strokes, adding everything straight to the tank is one quick way to make mistakes if they aren't careful.
At least it wasn't straight fuel. Or the other case when kids fill tanks with water.
I've bought 2 Homelite line trimmers that have had straight oil in them - one maybe 1:1 oil petrol, the other just straight oil. That one took some trying to get all the oil out of the motor - 15 minutes of clean fouled plug, start, run for 2 seconds and repeat. Pretty tedious. And those Homelites and Ryobis didn't even come with an air filter from the factory - I couldn't believe it when i first saw it, but sure enough.
My Victa Tilt a Cut had the fuel tap on when I bought it from the tip shop, motor full of oil. Instant smoke screen on first start - very unimpressed neighbours. I made the mistake of taking the blade off before trying to start (just in case anything happened and it flew off), completely forgot about how it is needed to prevent kickback. Just about ripped my arm off (but the gear start mechanism came apart first). Luckily just had to put it back together.
A fuel question; What octane fuel do you guys use?
Regards
Tyler