If you play against your own side you'll lose the whole game.

I sat back against the side and closed my eyes.

She put her hand against the side of my face, and I felt the heat coming through.

The hands are always kept against the side of the legs.

His breath was hot against the side of my face.

They had him up against the side of a truck.

They played a 3 day match against the local side.

Put the paper flat against the top side of the book.

He put his hands against the side of the truck.

It can also be hit against the side of the leg.