pillasteis
-you caught
The word pillasteis is the preterite form of pillar in the second person plural.
See the full pillar conjugation

pillar

Realmente, me pillasteis, chicos.
I mean, you really got me, guys.
Want to Learn Spanish?
Spanish learning for everyone. For free.
SpanishDict Premium
Have you tried it yet? Here's what's included:
Cheat sheets
No ads
Learn offline on iOS
Fun phrasebooks
Learn Spanish faster
Support SpanishDict