1. Clothing that constricts the testicles to the point that sperm cells die at a rate of a thousand sperm per second.
2. Being hit on by 17 year old overweight girls.
1."Yo I'm considering a vasectomy" "Nah just put on some evan tight jeans and you're good to go."
2. "Yo Jaylin was hitting on me in McDonalds." "HA! EVAN TIGHT SON!"