A crasher party is an event where UNINVITED guests show up and join the festivities. The crossword solutions for this term include TOWNIE (6 letters), ALICE (5 letters), pinata (6 letters), UNINVITED (9 letters), WEED (4 letters), TRESPASSER (10 letters), RAM (3 letters), and ANT (3 letters). TOWNIE refers to someone who lives in a particular town, ALICE is a reference to ALICE in Wonderland, pinata is a traditional Mexican game, UNINVITED is self-explanatory, WEED is slang for marijuana, TRESPASSER is someone who enters a property without permission, RAM is a male sheep, and ANT is a small insect.