"It's actually quite simple."
"You can do this!"
"If you behave well I'll let you off early."
"I can be nice too, sometimes."
"I'm telling the truth."
"This doesn't hurt."
"The coach is always right."
"Actually, this is quite fun!"
"Okay, after this you can go for a water break."
"Since when do I lie?"
"You're getting fat."
"You only have to do 10 of this." (Most of the time they claim that you've done it all wrong and you end up doing 50.)
Anything that starts with "When I was your age..."
"This beam is very sturdy." (referring to our school gym beam...)
"So long as I can support you, you are safe."