lijst of nicknames used on Glee (Source: Glee Wiki, some from memory). A few have been left out so if u can think of any just post in comments)
__________
RACHEL
Rach, A-Rach, Babe, (Finn)
Miss Bossy Pants, Eva Peron (Mercedes)
RuPaul, Man Hands, Treasure Trail, Stubbles, That Thing, Sweetie (Quinn)
Yentl (Dakota, Santana)
Boy Hips (Lauren)
Benedict Arnold (Kurt)
Dwarf, Midget, Hobbit (Santana)
Barbra Streisand (Suzy Pepper)
Lady, Michele (Sue)
Baby, My Hot Little Jewish American Princess (Puck)
The Jew (YouTube user)

FINN
Finnocence (Santana)
Frankenteen (Santana, Dakota Stanley, Sue)
Sugar straal, ray (Sue)
T-Rex...

Glee casts tattoos

With a total of nine tattoos, Lea Michele has the most ink of any member of the cast of Glee. Her tats include two butterflies (one on her right foot and one on her lower back), the words "I Believe" inside her right wrist, muziek notes from the song "Bohemian Rhapsody" (left shoulder blade), a goud ster on her left wrist in honour of Rachel Berry, the word "Imagine" on her left foot, and a kruis on the side of her left rib cage.
Lea also has a tattoo on her thigh in memory of her deceased grandfather (unseen).

You may not have known it, but Matthew Morrison has a tattoo of a...