When I was little, I often went to my cousin's house to play.
Tips
culture
Chinese distinguishes maternal vs paternal cousins. 表哥 is a cousin with a different surname (mother's brother's son, or father's sister's son). A same-surname paternal cousin is 堂哥. English lumps them all as 'cousin.'
grammar
The full set: 表哥 (older male), 表弟 (younger male), 表姐 (older female), 表妹 (younger female) — all for maternal-side or cross-surname cousins.