pop out
v 1: appear suddenly; "Spring popped up everywhere in the
valley" [syn: {pop out}, {burst out}]
2: bulge outward; "His eyes popped" [syn: {start}, {protrude},
{pop}, {pop out}, {bulge}, {bulge out}, {bug out}, {come
out}]
3: exit briefly; "He popped out for a quick coffee break" [ant:
{pop in}]
4: come out suddenly or forcefully; "you stick a bill in the
vending machine and the change pops out"