discomfort is usually the number one reason for man spread (if I read man spread correctly- tis the art of separating one’s twigs and berries, correct?) either in public or in private?
heat is probably reason number 2. heat creates sweat and typically stick. stick is no bueno. you have had something stick to your inner thigh?
also, there are two testes which tend to be very sensitive. this reason might be the creme de le creme of reasons. like i almost threw up once when someone flicked me too hard in the privates and did throw up when I got kneed there as a teen. there is no probably no worse pain and on a small level, the man spread is a desperate move to release the tension between jean, support system, leg, and/or testes.
I think that’s it.