Ace rag? 7 or 8 maybe? I'll go for A8s.

"would a pocket pair, limp in after 3 people have and push all in a late position raiser ??"

Limp, certainly, and with 99 or TT maybe well fancy their chances against either a pot stealer or someone with overcards. But enough people slowplay AA to make that a genuine concern - they think they're being all clever.

Last night I played a £25NL game where three guys did the min-raise min-raise, £1-£1.25-£1.50 etc. thing as it went round the table pre-flop until one of them decides to bang down a 14xBB bet to stop it. One opponent folds; the other immediately goes all-in and wins with AA. I rather admired that