Joke Collection Website - Talk about mood - What does a triangle remind you of?

What does a triangle remind you of?

Underwear, mountain, bicycle, frog, tripod, plane, bow and arrow, triangle, pyramid, emperor and man, pine tree, umbrella, house, love, fire, circle, square, ellipse, straight line, curve, vector, geometric problem, Pythagorean theorem, projective theorem, trigonometric function, sine and cosine curve, golden triangle, triangle, social class. ...