something that is done where both arms are bent upwards to the face to show the appearance of short arms; most people experience this around weirdos or during sex.
puking so extremely loudly as to sound like a T-Rex, usually as a result of excessive alcohol consumption
Sarah: "Where's Jake at?"
Jordan: "He just downed his 10th shot of tequila, and now he's in the bathroom doing the T-Rex."
Jake: "RRRRRRRRRRRRROOOOOOOOOOOOOOAAAAAAAAAAAAARRRRRRRRRRRRRRRR!!!!!!!!!!!!!!"