a really gay looking haircut that resembles the tip of a mushroom...rounded on the top and then gets larger as it widens out around the base. Only seen on gay people.
Mike'smushroom tip makes him look like a complete idiot.
When the tip of a man or shemale's penis looks like the tip of a mushroom
Me and my girl haven't seen each other in forever so I've been jacking off a lot. Last night she pulled down my pants and when she saw my dick she sang the Mario theme, it looked like a Mushroom Tip.