Rick Ross | Rick Perry | Rick Dees | Rick Santorum | Rick Rubin | Rick Moody | Rick Wakeman | Rick James | Rick Danko | Rick Astley | Rick Wagoner | Rick Springfield | Rick Snyder | Rick Scott | Rick Ross (rapper) | Rick Trevino | Rick Derringer | Rick Warren | Rick Reilly | Rick Prelinger | Rick Nowels | Rick Mercer | Rick Buckler | Rick Sternbach | Rick Smolan | Rick Riordan | Rick Lazio | Rick Stein | Rick Rude | Rick Moranis |
The term was in use in science fiction fandom no later than 1947, when it was used (spelled "ego boo") in a letter from Rick Sneary published in the letter column of Thrilling Wonder Stories.