Will use of a breast pump stimulate a mans nipple?

Using a breast pump is specifically designed for lactating women to express milk, and it typically does not stimulate a man's nipple in the same way. While a man's nipples can be sensitive and may respond to stimulation, the mechanics and purpose of a breast pump are not intended for that. However, some men may experience changes or sensations if their nipples are stimulated, but this would be unrelated to the use of a breast pump.