Humans nor any other animal can accurately sense temperatures.

1. The sensations of hot and cold are relative. Stick one hand in ice water, one hand in hot water, then after a few minutes, stick both in room temperature water. It'll feel hot to the hand in the ice water and cold to the hand in the hot water.

2. All room temperature objects conduct heat differently. Metal feels cooler than wood, though both may be 70 degrees. Metal conducts/absorbs the heat from your hand quicker, which is exactly what we feel is cold.