Loving Mother's Hope, Infurating Father's Knowledge
http://www.bmezine.com/tattoo/A50418/high/bmegl051849.jpg
愛 = love, be fond of, like
母 = mother; female elders; female
望 = to look at, look forward; to hope, expect
愛母望 could be translated as "loving mother's hope", or "love mother's gaze".
氣 = air, gas, steam, vapor; spirit
父 = father
智 = wisdom, knowledge, intelligence
氣 can also be interpreted as "angry" or "mad", as in "氣死你" which means "making you mad [to death]".
氣父智 could then be translated as "infurating father's knowledge".
It is probably fitting, especially after when this person's father finds out he/she got random Chinese characters tattooed on his/her legs.