Yes, especially if you squirm from time to time and rub his boner with your firm, round ass.
Yes, that is why some men will go to bars and pay for a lap dance.
Of course, they can get a boner just from looking at you.
Absolutely!
I agree that just looking will work for most men...but sitting, really! Do you even have to ask? Stick to the chairs sweetie, a little while longer.
Yes they can. I had a female friend sit on my lap at a party when she had a few drinks and I got a boner. She squirmed a bit on my lap and I ejaculated in my pants when she was still on my boner.